Chesterfield, Virginia
Benefits of Superstreets: Superstreets Safety
Time Savings
Increased Capacity
Access Management
Improved Traffic Flow
Land- se and Corridor rotec on
Less Expensive than Grade-Separated Alterna ves
For more information, please contact:
Chesterfield County Transportation Department ATTN: Stan Newcomb 9800 Government Center Parkway Route 10 Widening Project P.O. Box 40 State Project: 0010-020-632, PE101, R201, C501 Chesterfield, VA 23832 UPC No: 101020 Federal Project: STP-5A27(149) Cost and Impacts: A s perstreet can process significantly more What is a Superstreet? traffic vol mes than a conventional intersection, b t witho t the cost and the right-of-way impacts of other alternatives s ch as an interchange. A S perstreet is an innovative intersection treatment that safely and efficiently manages congestion by eliminating the left and S itability to Ro te 10: Ideal locations for s perstreets in s b r- thro gh movements on the minor cross streets of a b sy inter- ban areas are higher-speed, higher-vol me arterials that are an- section. Traffic on the cross-streets wanting to make a left or ticipating commercial and residential growth. Significant growth thro gh movement will instead make a right t rn and then a is anticipated on Ro te 10 between now and the 2036 design s bseq ent U-t rn in order to get to their desired location. If year. The fact that Ro te 10 already has an existing wide median eno gh traffic is anticipated, the U-t rn crossovers co ld also be to handle U-t rning traffic by cars and tr cks means this road is signalized. ideally sit ated to accommodate the s perstreet treatment with minimal impacts beyond what wo ld be needed for conventional Altho gh there are no s perstreets in Virginia, these innovative widening. intersections have been s ccessf lly sed in many other states, Testimonials to Economic Growth: incl ding b sy high-vol me arterial roads in North Carolina, Maryland, Texas, Michigan, and Utah. Those other roads share many similar characteristics with Ro te 10, incl ding high traffic vol mes and heavy concentrations of adjacent b sinesses. v N C [TX] .
. v q b b k . k b fi . ” – San Antonio Express-News, 3/17/11
Capacity and Travel Time: A normal traffic signal requires as many as eig t signal p ases to accommodate all le -turning and Why Build a Superstreet? t roug traffic. A superstreet only requires two signal p ases at eac intersec on. T is greatly increases t e efficiency o t e sig- A superstreet o ers many advantages over conventional inter- nals, par cularly w en mul ple intersec ons on t e same corri- dor are converted to superstreet. T e traffic simula ons o t e sections, including: oute 1 pro ect predict t at, in t e year 3 , travel mes could improve by as muc as 37% on oute 1 West and by % Sa ety: Superstreets ave been s own to operate wit consider- on oute 1 East w en comparing t e superstreet alterna ve to ably ewer cras es t an conventional intersections wit compa- conven onal widening o oute 1 . rable tra ic volumes. For example, an intersection in Nort Carolina went rom aving 4 cras es in t e 3 years be ore con- version to a superstreet, to only cras es in t e 3 years a ter conversion. T e primary reason or t is is t at a superstreet as only 14 “con lict points” – points w ere t e pat s o any two t roug or turning ve icles diverge, merge, or cross – as com- pared to 3 con lict points at a conventional intersection.
oute 1 at Meadowville oad