The Past, Present, and Future of the American Concrete Pavement Association
By Bill Davenport, Gerald Voigt and Peter Deem A Legacy of Quality, Innovation and Unparalleled Customer Support
1963
First Oscillating Screed Finisher
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Together with the American Concrete Pavement Association, we have provided 50 years of leadership in concrete paving technology. From all of us at GOMACO... Happy 50th Anniversary ACPA.
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WIRTGEN AMERICA . 6030 Dana Way . Antioch, TN 37013 Tel.: (615) 501-0600 . www.wirtgenamerica.com ROAD AND MINERAL TECHNOLOGIES Table Of Contents A Concrete Legacy: TheT 1990s: PrologueP A Decade of New Starts 7 69 TheT 1960s: TheT 2000s: TheT Era of Change TheT New Millennium 19 91 TheT 1970s: TheT 2010s and Beyond: TheT Pivot of Change Decade A Look Ahead 33 109
TheT 1980s: Chairmen of the ACPA Board of Directors 122 TheT Era of Expansion References 126 51 Guide to Acronyms and Abbreviations 128
About the Cover Authors ACPA member companies and affiliates. The cover depicts the U.S. flag against an Bill Davenport ACPA Additional copies of this publication image of the first slipform paving machine. American Concrete Pavement Association may be ordered from the American These images represent the enduring Gerald F. Voigt, P.E. Concrete Pavement Association. To order innovative spirit that represents ACPA and American Concrete Pavement Association printed copies, members may log in to the its members. Cover illustration by Chris ACPA members-only section of the ACPA Smith. Peter Deem website (www.acpa.org), and then may Holcim (US) Inc. (ret.), click on the “Bookstore” tab. All others About this Publication ACPA Honorary Life Member and ACPA may order online at www.acpa.org/ “A Concrete Legacy: The Past, Present, Chairman-2006 bookstore. Alternatively, please contact and Future of the American Concrete ACPA at 847.966.2272 or acpa@ Pavement Association” is a publication Designer acpa.org. Single copy price: $10 for of the American Concrete Pavement Chris Smith members; $45 for non-members. For Association, 9450 W. Bryn Mawr Weeb Enterprsies quantities of 10 or more, please contact Ave., Suite 150, Rosemont, Illinois [email protected] ACPA for discount pricing. When 60018. ©2014, American Concrete ordering, please mention the publication Pavement Association. No portion of Printer code, “ACPA50.” this publication, in whole or in part, may Printed in the United States of America by be reprinted, reproduced, stored in a Modern Litho, Jefferson City, Mo. This The opinions and views expressed in this retrieval system or transmitted in any form publication includes 10% post-consumer publication are solely those of the authors, or by any means (including electronic, waste content. Modern Litho is a Forest and do not necessarily reflect those of the mechanical, photocopying, recording or Stewardship Council™ certified company American Concrete Pavement Association, other methods), without prior permission of (BV-COC-963605). its members, affiliates, and/or staff. the publisher. Although every effort was made to capture Published by the American Concrete FSC Logo and express details as factually and Pavement Association accurately as possible, this publication— 9450 W. Bryn Mawr Ave. as with any account of history—relies upon Suite 150 Ordering Copies of this Publication records and personal accounts that may Rosemont, IL 60018 Single copies of this publication are mailed not be complete or flawless. acpa.org at no cost to “official representatives” of
1963 FRESNO, CA 2013 CONCORD, NC
GUNTERT & ZIMMERMAN EST. 1942
A Concrete Legacy: Prologue 8 A Concrete Legacy: Prologue Following what is commonly known as the second industrial revolution of the late 19th century, America charged full speed into the 20th century. The nation was growing, as evidenced by the doubling of the U.S. population in the first 50 years of the century. 1 At the same time, the country was transforming from an agrarian to industrial society. Many factors are credited with Photo shows an example of a paving crew in 1897. Prologue fueling that transformation, including innovation, (Photo courtesy of the Federal Highway Administration.) imagination, and ambition. But the journey would have been impossible without a reliable network of roadways, highways, and airports. Of course, many of those pavements were constructed called the Nemacolin’s Trail. It took 50 years to with concrete, and in fact, concrete remains the convert the trail into the federally-funded “National pavement material of choice for long-lasting, Highway,” but the 600-mile-long highway eventually reliable pavements. traversed six states and connected the Atlantic This is the story of the American Concrete Ocean with the Mississippi Valley. The highway became U.S. Route 40, one of the first officially Pavement Association, and the role the association, 2 its allies, and its members have had in building recognized highways in the United States. and preserving that network. Although our story begins in 1963, it would not be complete without First Concrete Pavement first exploring some of the landmark events that Another milestone event was the placement of A Concrete Legacy: Legacy: A Concrete influenced the construction of the nation’s surface the nation’s very first portland cement concrete transportation infrastructure as we know it today. pavement in 1891. George W. Bartholomew, an The goal of this chapter is not an inventor who founded Buckeye Portland Cement attempt to capture the complete Company in Bellefontaine, Ohio, in 1886 after story of heavy and highway construction in America. Instead, it is a snapshot of the early milestones and people that set into motion the nation’s surface- transportation infrastructure as we know it today.
America’s First Interstate Highway In 1784, a year after the end of the American Revolutionary War, President George Washington set out on a journey whose purpose Stuck in muck – Underscoring the need for good was to keep the young nation roads, this photo depicts a common problem facing united. He traveled from his home motorists in the early 20th century. in Mount Vernon, Va., to the Ohio country, covering 680 miles in five Photo depicts inventor George weeks. His goal was to “open a Bartholomew, who was wide door; and make a smooth way learning about cement production in Germany credited with placing the first for the produce of that Country to and at the San Antonio Cement Co. of Texas. concrete pavement in the Bartholomew proposed the pavement to city pass our Markets before the trade 3 United States in 1891. may get into another channel.” officials of Bellefontaine, Ohio. The roadway Washington He believed the cement he was producing in envisioned would be built along a his small laboratory could be used to produce a network of Indian hunting paths hard, durable paved surface. After two years spent PROLOGUE 1960s 1970s 1980s 1990s 2000s 2010s REFERENCES 9 5 Ironically, it was it was Ironically, The Safety The Safety Bicycle that had the bicycle the most profound on highway effect and roadway construction in The the late 1880’s. of the introduction with bicycle,” “safety profile its lower pneumatic and two of the same tires first paving concrete of Much contractor. is still this pavement nearly in use today, 120 years after it was put into place!
In 1894, former Civil War General Roy Stone, a Roy Stone, General War Civil former In 1894, size, displaced the more dangerous “ordinary dangerous displaced the more size, wheel and smaller with its outsized front bicycle” had far in bicycles interest The strong wheel. back American as did the League of effects, reaching which Albert Pope, led by Col. Wheelmen (L.A.W.), to and local level state, at the federal, worked legislation. improvement road secure and member of activist, roads” “good civil engineer, Department appointed to the U.S. was the L.A.W., first Office of Road Inquiry, Agriculture’s of Administration Highway ancestor of the Federal archives. The 1894 project was built by William T.G. T.G. William built by was The 1894 project archives. America’s and roadbuilder a Bellefontaine Snyder, — Theodore Roosevelt, — Theodore 26th U.S. President, 1910 26th U.S. President, “Every man owes a part of “Every man owes his time and money to the his time and money to the business or industry in which No man has a he is engaged. his right to withhold moral an organization support from that is striving to improve conditions within his sphere.” Undated photo shows a Rex 7-E paver, manufactured by the the Chain Belt Undated photo shows a Rex 7-E paver, RexCon LLC. the forerunner to today’s Company, 4 According to ACPA According to ACPA archives, the first 8-ft.-wide archives, strip then of what was placed Main Street was “artificial stone” called Courthouse Square along the side of Bellefontaine’s The pavement in 1891. an immediate was and in fact, success, of the original blocks exhibited were pavement Fair. World’s at the 1893 Local business owners the petitioned to have around block entire with paved the square Court and so, concrete, and Opera Avenue in paved were Street Avenue Columbus 1893. of and the remainder in followed Main Street ACPA to according 1894, convincing city officials officials city convincing he finally and citizens, permission received first America’s to build As pavement. concrete part of the agreement, the he had to donate all There materials. was one other stipulation: Bartholomew had to post a $5,000 performance that bond and guarantee last would the pavement according years, five for of Years “100 ACPA’s to That $5,000 Innovation.” bond in performance 2013 dollars equal would about $128,000. An undated photo shows a truck traveling along one of the Lincoln Highway Association’s “Seedling Mile” pavement sections. 10 (FHWA). Central to his efforts, was his suggestion to combine existing roads into a network and recommended that ‘...the most effective lines that could be adopted for this purpose would be an Atlantic and a Pacific Coast line, joined by a continental highway from Washington to San Francisco.’”6 Prologue
The Automobile The appearance of the Koss Construction autocars, considered the first generation of batch automobile in the mid-1890s also had a trucks, stand ready to begin work in this 1921 photo. (Photo courtesy profound effect on roadbuilding. In 1900, of Koss Construction Company.) Americans owned 8,000 cars, and by 1920, that number grew to 8 million.7 roads, as well as to continue the dream for a Henry Ford’s 1908 introduction of the first transcontinental highway. mass-produced automobile, the “Model T” Ford, At the same time, efforts were underway to revolutionized automobile manufacturing, improve the quality of roads, which were mostly transportation, and personal mobility. Mass dirt and macadam, layers of aggregate coated with production made the automobile more affordable a binder agent. Although it offered an alternative to and accessible, and in fact, the price of the car dirt and stone, macadam had its drawbacks. “The actually declined. The standard 4-seat open touring
A Concrete Legacy: Legacy: A Concrete area of low air pressure created under fast-moving car cost $850 in 1909, but by the 1920s, the vehicles sucks dust from the road surface, creating price had fallen to $260, “because of increasing dust clouds and a gradual unraveling of the road efficiencies of assembly line technique and material.”11 volume.”8 In addition to macadam, roadbuilders tried many Based on wage information for the period, a other materials, including gravel, brick, wood, and union bricklayer, painter, or plumber in Chicago even molasses.12 In the quest for reliable, long- could purchase one of these cars for less than lasting roadways, the use of concrete pavements three months wages.9 grew steadily. In 1909, the first full mile of concrete roadway The Quest for Better in the country was paved on Woodward Avenue, Roads between 6 and 7 Mile roads at a cost of $14,000. In the late 1890’s, a Today, the roadway is known as M-1 in Wayne sort of ‘perfect storm’ County, Mich.13 In today’s dollars, that would be was brewing. Farmers approximately $330,000.14 were realizing better roads could be America’s first concrete street in Bellefontaine, Ohio, is shown leveraged in this 1932 photo. (Photo: ACPA archives.) against the hated railroads and their In 1909, Woodward Ave. (now M-1 tariffs, while in the Detroit metro area) was the site at the same time, of the first mile of concrete roadway in bicyclists were United States. enjoying leisure time exploring country roads.10 With more automobiles on the road in the early years of the 20th century, attention turned to building better PROLOGUE 1960s 1970s 1980s 1990s 2000s 2010s REFERENCES 11 under its constitutional right interstate to regulate Congress In 1912, commerce. Office enacted the Post Department Appropriations set aside $500,000 which Bill, program an experimental for post the nation’s to improve Although it proved roads. too small to make significant the program improvements, that federal taught Congress needed to go roads aid for to the states instead of local the federal- (Today, counties. aid system is based on an match.) 80/20 federal/state U.S. Supreme Court officially gave Congress Congress gave Court Supreme officially U.S. “to construct interstate highways” the power —Henry Ford, —Henry Ford, The Johnson slipformpaving machine makes another appearance on the grade in this undated photo. The machine had a profound effect on automating the paving process, and also represented the first of many major innovations to follow. The Johnson slipformshown in this photo depicting paving machine is Iowa, in 1949. paving in Mason City, Ford Motor Company. Motor Ford inventor and founder of The inventor and founder of “There is nothing like concrete concrete like is nothing “There 16 15 for a pavement; it is unbeatable. it is unbeatable. a pavement; for experience. own my from I know a concrete constructed, Properly anything will outwear surface else known.” There were other federal funding other federal were There In 1803 as part of the legislation In 1913, a 23 mile-long, 9-ft.- a 23 mile-long, In 1913, part of the 20th In the early initiatives that were pivotal to the pivotal that were initiatives or construction of roadways. exploration the Shaw, v. Wilson In the 1907 case Federal Legislation Supports Federal Highways % of two admitting Ohio to the Union, the sale of Federal from the revenues roads, set aside for lands in Ohio were the National used for part was of which Cumberland to what is today Road from Virginia. West Wheeling, wide, 5-in.-thick concrete concrete 5-in.-thick wide, near Pine built was pavement year, following The Ark. Bluff, commissioners Lee County, from Wayne to by train traveled Miss., concrete to view Mich., County, Woodward including roads, Upon returning to Avenue. they authorized Mississippi, construction of rural of 49 miles portland By 1914, county roads. used to had been cement concrete of roadway. 2,348 miles pave associations roadbuilding century, construction road coordinated and one of the most projects, the Lincoln Highway was celebrated object lesson “Seedling Mile” (LHA’s) Association’s program. The first was built in the of 1914, fall of just west Illinois. Malta, The “Seedling were Miles,” intended “to demonstrate the desirability of this permanent type of road construction” and “crystallize public sentiment” “further construction of the same for the LHA worked Generally, character.” Association Cement with the Portland of cement donations (PCA) to arrange the seeding mileage. for In 1916, President Woodrow Wilson signed the 12 first “Federal-Aid Highway Act” directing the federal government to cooperate 50/50 with states in road building. The states needed a professional highway department to be eligible for federal funds and had to maintain the federal-aid road once it was completed.17 Highway and roadway construction changed considerably during the Great Depression (1929- 1937) through World War II (1941 to 1945), when the emphasis shifted to putting unemployed people to work and supporting the war effort.18 Although President Franklin Roosevelt Prologue supported toll “superhighways,” the vision was not fully realized in the Federal-Aid Highway Act of 1944, due to differences of opinion on a concept known as “excess right-of-way,” which involved selling or renting extra land to help pay for future construction and upkeep.19
The Interstate Highway System Arguably, the most significant milestone in U.S. transportation-construction history was the nation’s largest highway construction project, the “National System of Interstate and Defense Highways.” President Dwight D. Eisenhower had two A Concrete Legacy: Legacy: A Concrete experiences that shaped his perceptions and A dedication ceremony on October 25, 1956, his goal for creating the Interstate Highway marks the completion of the first Interstate highway system. The first was a transcontinental troop project In the United States. (Photo courtesy of Koss Construction Company.)
convoy in 1919, in which then Lt. Col. Eisenhower documented the poor road conditions along the primary route, the Lincoln Highway. The second was his experiences in Europe in the 1930s and ‘40s, where he saw firsthand the advantages of the Autobahn system.20 His predecessors, Presidents Roosevelt and Truman, also were interested in highways, but issues of the day—including the economy and the war—took precedent over plans to develop a highway system. Eisenhower saw the opportunity to implement the system, although the effort was not without resistance and detractors. In early 1954, presidential advisors disagreed about how to finance and construct the interstate system. In April, Eisenhower told his staff he wanted a “dramatic” plan to get $50 billion worth of “self liquidating highways”—highways that would not add to the national debt—under construction. In July, he announced the “Grand Plan” for an articulated highway network.21 Eisenhower signed the “Federal-Aid Highway Act of 1956” into law on June 29, 1956. The bill Workers use fixed-form paving methods to construct the Ford Expressway called for 41,000 miles of Interstate roadways at (I-94) in metropolitan Detroit in the early 1950s. (Photo courtesy of an estimated cost of $41 billion. After enactment Denton Enterprises, Inc.) Congratulations ACPA for 50 years and counting
The ACPA’s leadership over the last 50 years has helped all of us create better airports, roads, streets, bridges, parking lots and most importantly, the driveway that welcomes us home. We are proud to have been there since the beginning with ACPA as Dundee Cement and today as Holcim (US). Our shared passion for paving has led to numerous improvements to the industry we love and here’s to the next 50 years!
888.646.5246 www.holcim.us
Perfecting Progress™ 14 of the highway bill, and even after leaving office, Eisenhower maintained an abiding interest in the interstate system.22 To honor him for that “personal and absolute decision,” Congress passed a bill in 1990 that changed the legal name of the Interstate System. It is now called The Dwight D. Eisenhower National System of Interstate and Defense Highways.23 Iowa Highway Commission’s 1949 The Interstate Era had begun, and as prototype of the slipform paving machine the “Grand Plan” began to take form, another is shown on display, many years after the chapter in our nation’s surface transportation machine made its first appearance on the infrastructure was about to open. ! grade. Prologue
“The workers today would not put up with what their forebears did. Many of the early workers slept under their trucks just like the cowboys. Many of the early construction companies ran cookhouses and bunkhouses like the one our company ran until the late 1940s.” —Irving F. Jensen, CONCRETE PAVEMENT PROGRESS, May/June 1999. A Concrete Legacy: Legacy: A Concrete
Workers place concrete pavement at what is now Hunter Army Airfield, a military airfield and subordinate installation to Fort Stewart, located in Hinesville, Georgia. Note the relative thickness of this pavement, built in 1940, compared to airport pavements today. (Photo courtesy of APAC-Tennessee, Inc., Ballenger Paving Division.) PRPROLOGUEOLLOGUEE 1960s1996060s 191 1970s97070s 19 1980s98080s 1990s1919900s 2022000s0000s 2010s2200101 s RER REFERENCESEFEF RERENCCESES 555 1515151515 26 the slipform. A pan was suspended as a strike-off d accidents on runways, highways, roadways, and ot passes) on a county road in Cerro Gordo County, ot passes) on a county road in Cerro Gordo County, e to strike-off and finish the concrete. All modern increasing productivity and efficiency and allowing , A.W. French (1920); Rex Chainbelt, now known as , A.W. nishing machines that entered the market rendered nishing machines that entered the market rendered iments conducted in 1947 and 1948. Nicknamed the iments conducted in 1947 and 1948. Nicknamed the that made grade preparation, paving, texturing, and On the occasion of ACPA’s 25 year anniversary, four 25 year anniversary, On the occasion of ACPA’s me was limited to about 3,000 ft per day using about ded earlier in the century. They include Power Curbers, ded earlier in the century. the typical 10-car trains to transport the equivalent of the typical 10-car trains Corporation, draws the link between the two companies Corporation, draws the link acity. A 11E had an 11 cu. ft. mixer; a 27E had a 29.7 acity. ircular saw blades coated with diamond grit, the machine ver had 24-ft. long crawler tracks, driven by chains and , Miller’s grandfather, G.H. Miller, was married to Louise G.H. Miller, grandfather, , Miller’s pically required the use of trains and specially-built rails. trains and specially-built rails. pically required the use of , and other paving apparatus, continue to carry innovation her for cement. A locomotive pulled the batch cars to the her for cement. A locomotive nto a mixer. A pipeline was run along the grade to supply A pipeline was run along the nto a mixer. company. company. y concrete,” Miller wrote. orms. , especially in rural areas. According to David Howard, P.E., According to David Howard, P.E., , especially in rural areas. beginning in the early part of the 20th century, as well as how century, the early part of the 20th beginning in 20s through the 1950s. As concrete paving expanded, so too, 20s through the 1950s. As concrete paving expanded, ke the abuse of these bulky new machines,” according to Miller. ke the abuse of these bulky new machines,” according ions, and errors. Our intention is to capture examples of machines examples of is to capture intention errors. Our ions, and 28 Although motorized vehicles would eventually replace horse-drawn equipment, there were limitations where they equipment, there were replace horse-drawn vehicles would eventually Although motorized 24 30 29 27 25
Cecil W. Hatcher, a Covina, Calif.-road engineer who is credited with developing the “Bump Cutter.” Equipped with almost 100 c a Covina, Calif.-road engineer who is credited with developing the “Bump Cutter.” Hatcher, Cecil W. James W. Johnson and the Iowa State Highway Commission for their role in developing the original slipform paver with first exper Johnson and the Iowa State Highway Commission for their James W. Island, Ill. Instead of rubber wheels, the “Quad City” pa of Quad City Construction Co., Rock Glenn Perkins and Bill Dale, Sr. “Jeep Skate,” the gasoline-powered machine had rubber tires , H-beams connected the wheels with the web of each beam to act as “Jeep Skate,” the gasoline-powered machine had rubber was used place a one-mile section of 20-foot wide pavement (two 10-fo and to finish the concrete. In October 1949, the machine slipform pavers ever developed. Iowa. These early machines are the undisputed first machine, the Quad City slipform paver employed a pan suspended from a steel fram sprockets to drive the tracks. Like Johnson’s slipform pavers are modeled after this machine. was used to address ski was first used in 1956 to grind a new concrete runway in Arizona. By the end of the decade, the machine in pavement. bridge decks. Hatcher later adapted the Bump Cutter to function as a machine to cut longitudinal grooves at the ti CMI Corporation, for inventing the dual-lane, automated grader in the mid-1960s. Most concrete paving Bill Swisher, significantly in a single day, a hundred people in the process. The CMI subgrader enabled up to two miles of grade preparation unprecedented paving.
President/CEO of Koss Construction Co., Topeka, Kansas, transporting materials to the rural grade in the 1910s through 1920s ty transporting materials to the rural grade in the 1910s Kansas, Co., Topeka, President/CEO of Koss Construction ot which had two boxes, one for aggregate, and the typically began with a series of batch cars—each of He explained the process paving site, where the dry and cement i The skip then raised and deposited the rock, sand, materials were dumped into a “skip.” to Howard, it would take about 1-1/2 of was deposited between the forms. According Once mixed the concrete the paver water. single batches of concrete. today’s
In the early part of the century, most roads were unreliable, and so, transporting concrete was not practical in many locations and so, transporting concrete was not practical most roads were unreliable, In the early part of the century, could go. ACPA members will surely recognize and support many of these companies, which along with other manufacturers of machines, tools members will surely ACPA curing faster, easier, and more cost efficient. easier, curing faster, and technology to new heights. Several companies, including Bidwell, GOMACO, Minnich Manufacturing Co. Inc., and others emerged in the mid-1960s with machines Several companies, including Bidwell, GOMACO, Minnich Manufacturing Co. Inc., and others emerged
s s s of these companies were foun Other companies also played a role in the early development of concrete paving equipment, and many s did the number, type, and applications of paving machines, as well as other equipment, tools, and apparatus, including paving f type, and applications of paving machines, as well did the number, in paving roads and highways, the large, heavy concrete fi rolled in and concrete became an acceptable material “When the 1920’s need for more substantial, sturdier steel forms that could support and ta existing, lightweight forms useless. This led to the the 1960s, there were waves of innovation that changed paving productivity. When the Interstate highway construction began in contributions. They are: for their enduring ACPA individuals and their inventions were recognized by (1948) Construction Div. Inc. (dating back to 1953); Gegenhardt Construction Company (dating back to 1953), Guntert & Zimmerman Excavator (1900), and many others. RexCon LLC (1906); Templet Countless miles of concrete pavement were built with this equipment, creating the long-life legacy of the product during the 19 Countless miles of concrete pavement were built with
Early models of the machine were steam-powered, and bore numerical designations that roughly corresponded to the cubic foot cap Early models of the machine were steam-powered, The early machines were supplied by companies such as the Koehring Machine Company. Thomas E. Miller, President of Metal Forms President E. Miller, Thomas Company. supplied by companies such as the Koehring Machine The early machines were
No historical account of the ACPA’s history that evolved, of the machines without recognizing the importance would be complete account of the ACPA’s No historical in 1905. truck, first manufactured advents was the dump One of the early that transformed the concrete pavement industry the concrete pavement that transformed account of every versus a complete development. machine or equipment work of the association. influenced the need for and the evolution generation family member involved in the business Roadway to Success,” In addition to being the first in his book, “Forming the G.H Miller served as sales manager for the of the namesake company. Koehring, sister of Philip and William Koehring, founders Philip next designed a mobile machine that was able to both mix and la “Even more excited about the role of concrete in paving, and a 34E had a 37.4 cu ft. mixer. cu. ft. capacity,
Editor’s note: One of the greatest dangers of creating an historical account is the inevitability of dreaded exclusions, omiss exclusions, of dreaded inevitability account is the an historical of creating dangers One of the greatest note: Editor’s Men and Machines Machines and Men 16
“Together, the united forces of our communication and transportation systems are dynamic elements in the very name we bear—United Prologue States.Without them, we would be a mere alliance of many separate parts.”34
—Dwight D. Eisenhower, 34th U.S. President, February 22, 1955
Photo depicts paving in the 1950s. (Photo courtesy of Koss Construction Company.) A Concrete Legacy: Legacy: A Concrete
Begun in 1956, the AASHO Road established the principles used for pavement and bridge design on the Interstate system. PROLOGUE 1960s 1970s 1980s 1990s 2000s 2010s REFERENCES 17
-- The 31,32 33 FAST FACTS FAST Pavement Airport Concrete First ! " # $" # % &