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Major Road Projects

 
 

OPEN HOUSE: The public is invited to an open house event on Dec. 12, from 4-7 p.m., at St. Peters City Hall, to discuss proposed improvements to the Route 370 – Salt River Road Interchange. The purpose of the project is to improve access for commuter and freight traffic and reduce congestion at the I-70 interchanges at Mid Rivers Mall Drive and Cave Springs Boulevard. Learn more ...

 
 

Currently under construction: 

 

Completed projects:

 

READ NEWS RELEASES for updates on projects that affect St. Peters roads.

  


PREMIER 370 BUSINESS PARK TRANSPORTATION IMPROVEMENTS

Estimated Cost: $2.23 million
Contractor: Duke
Scope: The project constructed lane and traffic signal improvements along Premier Parkway and Lakeside Park Drive. Six new traffic signals were installed, located at the Premier Parkway intersections of Executive Centre Parkway and Lakeside Park Drive, the Lakeside Park Drive intersections with the 370 Ramps, and at two of the four entrances to the Amazon fulfillment center at 4000 Premier Parkway. The project was 50 percent funded by a St. Charles County Economic Development reimbursement grant, with the remaining 50 percent by Duke Realty.

Currently: Lane improvements and traffic signal installations are complete. The roadway lighting equipment is expected to arrive and be installed by the end of July, which will complete the project.

Aldermanic Ward: 1

 

Premier-370-Transportation-Improvements-April-2019-WEB 

Traffic signals being installed near Amazon

 

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MID RIVERS MALL DRIVE CORRIDOR IMPROVEMENTS

Estimated Cost: $2.35 million

Contractor: Gershenson

Engineer: Horner & Shifrin

Scope: This project will improve safety and reduce congestion on Mid Rivers Mall Drive by constructing new dual left turn lanes on northbound Mid Rivers Mall Drive onto westbound Cottleville Parkway. The project also will modify the existing traffic signals and provide ADA accessibility improvements. In addition, the project will improve the safety of an existing multi-use pedestrian/bike trail that connects to the Great Rivers Greenway Dardenne Greenway trail. This project is 80 percent funded through a St. Charles County Road Board grant, with another $200,000 in federal funds for related trail improvements.

Currently: The project is substantially complete with all bridge widening, turn lane additions and signal improvements in place. The roadway and trail are both open. The final grading and seeding of the disturbed ground will occur in the fall when the weather is more favorable for grass growth.

 

MRMD Corridor Improvements 2018-6580-WEB 

November 2018 photo of Mid Rivers Mall Drive corridor improvement project looking southbound from Cottleville Parkway intersection

 

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JUNGERMANN ROAD BRIDGE REPLACEMENT

Estimated Cost: $2.9 million

Contractor: Pavement Solutions

Engineer: HR Green

Scope: This project will replace two existing deficient culverts on Jungermann Road between Country Creek Drive and Margaret Brown Court. The existing road elevation will also be adjusted to mitigate flooding issues. In addition, improvements will be made to the parks trail to improve safety and access for pedestrians and bikes. The project will include an 11-foot wide trail along Jungermann Road, and construction of two trail crossings at Jungermann Road, one at the Country Creek Drive traffic signal and the other under the new bridge to be constructed just north of Country Creek Drive. This project is eligible to receive more than $1.346 million in reimbursement funding through the St. Charles County Road Board and East-West Gateway Council of Governments.

Currently: During removal of the culvert north of Country Creek Drive and culvert south of Margaret Brown Court, an unexpected conflict with a utility company’s major underground communications duct system was found. This communications duct system consists of nine 4-inch diameter conduits encased in concrete, which contain a mix of fiber optic cable and copper wiring providing service to a large number of customers in St. Peters. This utility conflict has delayed construction, but is nearing completion. The contractor has completed installation of the new box culvert at Margaret Brown Court across Jungermann Road. The contractor will soon resume bridge construction north of Country Creek Drive, with the west side of the bridge scheduled for completion by the end of 2019. The east side of the bridge as well as the overall project is scheduled for completion by Spring 2020.

Aldermanic Wards: 3 & 4

 

Jungermann Road Oct. 8

Oct. 22, 2019, photo of concrete being poured on the Jungermann Road Bridge Replacement project

 

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SALT RIVER ROAD & ARROWHEAD INDUSTRIAL BLVD. INTERSECTION IMPROVEMENTS

Cost: $1 million

Contractor: To Be Determined

Engineer: Stock & Associates

Scope: This project will improve the intersection and replace a span wire traffic signal system. The new “Green-Tee” style intersection will improve safety, reduce congestion due to truck and shift change traffic, and limit disruption of traffic along Salt River Road. This project is eligible for 80 percent of funding through a federal Congestion Mitigation and Air Quality (CMAQ) reimbursement program, administered by MODOT, and 16 percent of funding through a St. Charles County Road Board reimbursement program.

Currently: The design of the project is complete and right-of-way documentation is being reviewed by MoDot. The project is scheduled to begin construction in late summer 2019. 

Aldermanic Ward: 1

 

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McCLAY ROAD RESURFACING PHASE I - Completed in 2019


Cost: $1.23 million

Contractor: Pace Construction

Scope: This project replaced defective concrete slabs on McClay Road between Thoele Road and Jungermann Road and diamond ground the entire surface to improve smoothness. The asphalt pavement between Thoele and Shepherds Hill was resurfaced. Sidewalks were repaired where necessary and improved to meet current ADA standards. The project was 80 percent funded through a Federal Surface Transportation Improvement reimbursement grant administered through East-West Gateway Council of Governments and Missouri Department of Transportation (MoDOT).

Aldermanic Ward: 4


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MID RIVERS MALL DRIVE WIDENING - Completed in 2019

Cost: $1.661 million

Contractor: NB West

Engineer: George Butler & Associates

Scope: This project improved safety and reduced congestion on Mid Rivers Mall Drive at I-70 and north to Ecology Drive. A traffic lane was added on both southbound and northbound Mid Rivers Mall Drive across I-70 by removing portions of islands and made some traffic signal improvements at the interchange. Additional northbound and southbound lanes also were added on Mid Rivers Mall Drive from the I-70 North Outer Road to Ecology Drive. A traffic signal was removed and replaced at the North Outer Road intersection. Plus, the project modified the existing railroad crossing north of the outer road and provided for a multi-use pedestrian/bike trail on the west side of Mid Rivers Mall Drive. This project was 60 percent funded through a St. Charles County Road Board grant.

Aldermanic Ward: 1

 

2019-03-26-MRMD-RR-REOPENED-WEB

Mid Rivers Mall Drive reopened at the railroad crossing north of Interstate 70


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JUNGERMANN ROAD & BOONE HILLS DRIVE INTERSECTION IMPROVEMENTS - Completed in 2018

Cost: $1.14 million

Contractor: Gershenson

Engineer: HR Green

Scope: New turn radii on Boone Hills Drive were constructed to replace a structurally deficient culvert. New traffic signals and sidewalks were also installed to make ADA-accessible improvements. The project was 80 percent funded through a St. Charles County Road Board grant.

Aldermanic Wards: 1 & 3

 

Jungermann Boone Hills-2018-6666-WEB

Jungermann Road and Boone Hills Drive intersection improvements project completed

 

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MEXICO ROAD RESURFACING PHASE II - Completed in 2018

Cost: $1.645 million

Contractor: Millstone Weber Company

Scope: Removed and replaced old asphalt and defective concrete, as well as diamond grinded to improve existing surfaces between West Sunny Hill Boulevard and Mid Rivers Mall Drive. Sidewalks were repaired where necessary and improved to meet current ADA standards. New traffic signal video detection systems were also installed. More than half of the cost for this project was paid for through federal reimbursement funds.

Aldermanic Ward: 2

 

Mexico Road Resurfacing II-2018-6563-WEB

Mexico Road resurfacing project completed

 

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