1. Purpose and Need
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1. Purpose and Need 1.1 Proposed Action The proposed project involves traffic improvements to United States Highway 93 (U.S. 93) in the Boulder City, Nevada, area. The project limits are between a western boundary at the end of Interstate 515 (I-515) on U.S. 93/United States Highway 95 (U.S. 95) in Henderson (U.S. 95 Milepost [MP] 59.10), approximately 1.6 kilometers (km) (1 mile) north of the Railroad Pass Hotel and Casino, and an eastern boundary on U.S. 93, approximately 1.2 km (0.75 miles) east of the Hacienda Hotel and Casino. The eastern boundary is coincident with the planned western end of the U.S. 93 Hoover Dam Bypass project Nevada Interchange (see Section 2.1). The Boulder City/U.S. 93 Corridor Study covers a total distance of approximately 16.7 km (10.4 miles) on the present route of U.S. 93 (Figure 1-1). U.S. 93 is the major commercial corridor for interstate and international commerce, and it is the single route through Boulder City, functioning as a principal urban arterial. It is a direct north-south link between Phoenix and Las Vegas, which are two of the fastest-growing areas in the United States (U.S.), and it carries a high volume of east-west traffic from Interstate 40 (I-40) to Las Vegas and to Interstate 15 (I-15). U.S. 93, in combination with other highways, creates a continuous Canada to Mexico (CANAMEX) corridor through the U.S. between Calgary, Alberta, and Nogales, Sonora (Figure 1-2). In Nevada, U.S. 93/95 is a four-lane divided facility from Las Vegas to just east of the U.S. 93/95 interchange in Boulder City. U.S. 93 and U.S. 95 are National Highway System (NHS) routes. In Arizona, U.S. 93 is a four-lane divided highway from Kingman to the Lake Mead National Recreation Area (LMNRA) boundary; the remaining segment of U.S. 93, totaling approximately 27 km (17 miles) from the LMNRA boundary over Hoover Dam to the eastern limit of the Boulder City Corridor Study near the Hacienda Hotel and Casino, is a two-lane undivided highway. Within the study corridor, U.S. 93 varies from a four-lane divided roadway to a two-lane roadway with numerous business driveways and cross streets. The Federal Highway Administration (FHWA), in cooperation with the Nevada Department of Transportation (NDOT), is studying the Boulder City/U.S. 93 corridor and has prepared this Environmental Impact Statement (EIS) for a project to improve this highway corridor, located in Clark County, Nevada. The Draft EIS (DEIS) for the project, released to the public in March 2002, considered the following alternatives: (1) taking no action (Alternative A); (2) improving U.S. 93 on the existing alignment (Alternative B); (3) realignment of U.S. 93 as a new four-lane, limited-access highway parallel to existing U.S. 93 (Alternative C); and (4) realignment of U.S. 93 as a new four-lane, limited-access highway by bypassing the developed area of Boulder City to the south (Alternative D). FHWA is the lead agency, and NDOT is serving as the sponsoring agency for the Boulder City/U.S. 93 Corridor Study. Cooperating agencies consist of the National Park Service (NPS), U.S. Bureau of Reclamation (Reclamation), Western Area Power Administration (WAPA), Bureau of Land Management (BLM), Regional Transportation Commission of Southern Nevada (RTC), Clark County, and the cities of Boulder City and T012004001SCO/ DRD1329.DOC/ 050730005 1-1 1. PURPOSE AND NEED Henderson. The corridor study is a vital element in RTC’s Regional Transportation Plan (RTP) and Transportation Improvement Program (TIP) and NDOT’s Statewide Improvement Program (STIP). 1.2 Purpose of the Project The purpose of the project is to provide overall transportation improvements in the corridor by reducing traffic congestion and crashes, and to improve regional mobility while maintaining or improving local circulation and access to Boulder City businesses. The proposed Boulder City/U.S. 93 transportation improvements address: x Resolving traffic problems in the vicinity of Boulder City x Extending freeway status to the U.S. 93/95 interchange x Improving operations at the junction of U.S. 93/95 x Creating a safer transportation corridor x Accommodating future transportation demand x Improving system linkage on U.S. 93 and maintaining route continuity 1.3 Need for the Project 1.3.1 Roadway Capacity Traffic Demand and Level of Service Traffic demand on the U.S. 93 roadway links in the project area has exceeded available capacity. One critical aspect of this demand-to-capacity problem is the high percentage of trucks, exacerbated by the relatively steep grades. Other key factors that limit capacity through this section of U.S. 93 are traffic signals and numerous access points to adjacent businesses and neighborhoods. Traffic volumes in the Boulder City/U.S. 93 corridor will continue to increase in the future, and most segments and intersections will reach Level of Service (LOS) F in the next 10 years (Table 1-1). Table 1-2A shows current and projected average annual daily traffic (AADT) volumes and Volume/Capacity (V/C) ratios for key roadway segments; and Table 1-2B shows LOS at key intersections on U.S. 93 within the study limits (Figure 1-3). The tables also show the approximate year when LOS F is anticipated for each segment and intersection. Traffic performance at key intersections and segments along the U.S. 93 corridor can be characterized on the basis of field observations of traffic conditions conducted in February 2000. x Railroad Pass Intersection – LOS D currently occurs at the signalized intersection of U.S. 93/95 and the Railroad Pass Hotel and Casino. The combination of a steep grade, high truck traffic volumes, high travel speeds, minimal stopping sight distances, and sharp curves in the vicinity of this intersection increases delay and reduces safety. Based on forecast traffic volumes, this intersection will experience LOS F by 2004. 1-2 T012004001SCO/ DRD1329.DOC/ 050730005 /$.(0($'1$7,21$/5(&5($7,21$5($ +$&,(1'$ +27(/$1' &$6,12 ($67(51 %281'$5<2) 72/$69(*$6 352-(&7 :(67(51%281'$5< , 2)352-(&7 &,7<2) +(1'(5621 5$,/52$'3$66 %28/'(5&,7< +27(/$1'&$6,12 726($5&+/,*+7 ),*85( 352-(&79,&,1,7<$1' 678'</,0,76 %28/'(5&,7<86&255,'25678'< (19,5210(17$/,03$&767$7(0(17 /$6(''()()LJXUH 1. 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PURPOSE AND NEED TABLE 1-1 Levels of Service (LOS) Maximum Density Freeway (Passenger LOS Cars/Mile/Lane) Description A 10 Free-flow operation. The ability to maneuver is almost completely unimpeded. B 16 Reasonably free-flow operation. The ability to maneuver is only slightly restricted. C 24 Near free-flow operation. The freedom to maneuver is noticeably restricted. D 32 Speeds begin to decline. The freedom to maneuver is more noticeably limited. E 39.3 Operation is at capacity. There is very limited room to maneuver. F Breakdown in vehicular flow. TABLE 1-2A Traffic Volumes (AADT) and Volume/Capacity Ratios (V/C) along U.S. 93 NDOT 1999 2016 2027 LOS F Counting by Location on U.S. 93 Station AADT1 V/C AADT V/C AADT V/C Year2 West study limit to U.S. 93/95 230 38,300 0.63 56,300 0.92 66,000 1.12 2021 interchange U.S. 93/95 interchange to 331509 32,000 0.53 47,200 0.78 55,0003 0.94 2033 Veterans Memorial Drive Veterans Memorial Drive to 1087 31,200 0.94 35,900 1.08 42,000 1.17 2006 Buchanan Boulevard Buchanan Boulevard to 228 16,000 0.79 31,500 1.48 37,000 1.92 2004 Pacifica Way Pacifica Way to Lakeshore Road 225 15,000 0.91 24,800 1.49 31,000 1.87 2002 Lakeshore Road to east 222 13,000 0.79 21,500 1.30 29,000 1.63 2006 study limit 1 The average daily traffic volumes have been adjusted for seasonal changes, per NDOT factoring procedures.