ANNOUNCEMENT: MoDOT & City of Washington Hold Celebration Event on July 10 for Route 100 Widening Project
Missouri Department of Transportation, Missouri Highways and Transportation Commission and City of Washington, took part in a groundbreaking ceremony Friday, June 6, 2008 to kick off construction of the Route 100 widening improvement project. MoDOT and the City of Washington are partnering in this $ 21.1 million dollar cost-share project.
The partnership between MoDOT and the City of Washington is monumental for the economic growth in the St. Louis region, City of Washington and surrounding areas. The widening of Route 100 will improve the capacity and safety of the highway for Franklin County motorists.
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Why Does Route 100 from Interstate 44 to Route 47 Need Improvements?
The Route 100 Widening Project is a cost-share partnership between MoDOT and the City of Washington, which has been awarded to Millstone Bangert for approximately $21.1 million. Route 100 from Interstate 44 to Route 47 has exceeded its capacity for a two-lane roadway and can no longer handle the amount of traffic that uses it on a daily basis. MoDOT has identified traffic congestion and safety as the major transportation issues of concern. In 1972, Route 100 between Interstate 44 and Route 47 was rebuilt to provide a straighter alignment and improve visibility at intersections. In 2003, the roadway was resurfaced. The current average daily traffic count is 16,000 vehicles per day. By 2020, that volume is expected to nearly double to 30,000 vehicles per day.
What Improvement Along Route 100 are Being Proposed?
- Based on the evaluations in the August 2004 final environmental assessment, which is a planning and environmental study used to determine a preferred alternative for the roadway, MoDOT recommends the construction of two additional lanes north of the existing two-lane roadway.
- Route 100 from Interstate 44 to west of Ranch Bluff Road will be widened to two lanes in each direction with a continuous center-turn lane. The continuous center-turn lane is necessary because of the need for left-turn movements. This will be built to the north of the existing roadway.
- Route 100 from west of Ranch Bluff Road to west of St. John’s Road will be a four-lane divided highway with a 42-foot grass median. This will be built to the north of the existing roadway. There isn't as much of a need for left-turn movements, so the access points are controlled to improve safety on this stretch of roadway. Median crossovers, where motorists can make left turns via deceleration lanes on the four-lane divided highway, will be provided to existing side streets.
- Route 100 from west of St. John’s Road to Route 47 will be widened to two lanes in each direction with a continuous center-turn lane. The continuous center-turn lane is necessary because of the need for
left-turn movements. Two lanes will be added to the north of the existing roadway, and one lane will be added to the south of the existing roadway. The existing signalized intersections will remain signalized.
- The bridge at Dubois Creek will be widened, and the bridge deck will be replaced. A new AmerenUE Railroad Bridge will be constructed parallel to the existing bridge on the north side.
How Will Traffic Be Impacted During Construction?
- Temporary lane closures and temporary bypasses will be used during construction to ensure traffic flow through the work zone. Construction is expected to be complete in June 2010.
Current Project Timeline
May 9, 2006
Held informational open house meeting.
Fall 2006
Right of Way plans were completed.
Early 2007
Right of Way negotiations began.
February 2008
Final design was completed.
March 2008
Contractors bid on the project.
April 2008
The project was awarded to a contractor.
June 2008
Construction began.
July 2010
Construction will be complete.
Route 100 Future Corridor:
Map of the Route 100 Future Corridor
The map shows MoDOT's long-range plan to widen Route 100 from Interstate 44 to Gray Summit. This map is from the Route 100 Environmental Assessment that shows the preferred corridor for Route 100. The environmental study was completed in 2004. Funding for this project is not available at this time.
Who Do I Contact For More Information?
