911 Washington Ave, St. Louis, MO 63101

4th and Broadway Sidewalks and Overlay

M3 Engineering was selected by the City of St. Louis to help evaluate and improve the corridor along 4th Street and along Broadway from Choteau to Convention Plaza.  The corridor is one of the most important and vibrant in downtown St. Louis with several historic and iconic buildings including Bush Stadium, the Edward Jones Dome, the Old Court House and the Eugene Field House.  Businesses include hotels, the MAC and an entrance to Lumiere Casino.

PTB 197 Various Phase II Projects

M3 Engineering (M3) was a subconsultant to Wood for Job No. D-91-606-20, Various Phase II Projects and Value Engineering, Various Routes, Various Counties, Region One/District One. The project included Phase II engineering services related to contract plan preparation for road and bridge improvements, development of specifications and estimates, value engineering, plan review and surveying on various federally funded projects in District One. M3 focused on improving and/or reducing costs through Value Engineering for roadway drainage, cross drainage, and detention for a variety of projects, including: 1. IL 31 Widening and Reconstruction, IL 176 to IL 120 (6.8 miles)2. US 20 Improvements, Randall Road to East of Shales Parkway (5.3...

JS McDonnell Bridge Replacement

M3 Engineering was selected for the design of the replacement of the existing Functionally Obsolete, three span bridge on JS McDonnell Boulevard. Bridge No. 164, which has an ADT of nearly 15,000, provides vital access to businesses north of Lambert Airport. The bridge spans Coldwater Creek and is only 1,200 feet from Lambert’s Crosswind Runway 6/24 making it subject to FAA’s Part 77 regulations that restrict the height of construction equipment from obstructing navigable airspace. The bridge is located within a FUSRAP site, so M3 worked with USACE to ensure that any disturbed subsurface material followed radioactive safety protocol. A floodplain study of Coldwater Creek was prepared to demonstrate no impact on the 100 year water surface...

Lindbergh Tunnel Inspection

M3 Engineering was part of the team that performed the periodic inspection of the Lindbergh Boulevard Tunnel under runways at Lambert Airport. In 2015 the Federal Highway Administration (FHWA) established the National Tunnel Inspection Standards (NTIS) for highway tunnels. The NTIS require tunnel owners to establish an inspection program with the minimum standard to inspect the tunnels, to maintain a tunnel inventory, to report inspection findings to the FHWA, and to correct critical findings found during the inspection. The inspection was performed per the NTIS guidelines, as well as MoDOT guidelines. Elements that were inspected included: Tunnel Walls, Pre-stressed Concrete Tunnel Roof Girders, Tunnel Portals, Concrete Slab-On Grade,...

Old Halls Ferry Bridge Replacement

M3 Engineering was part of the team that designed a replacement for the Old Halls Ferry Bridge over Halls Ferry Creek, located 0.10 miles north of State Route AC/New Halls Ferry Road. M3 performed a floodplain study on the stream to ensure that the proposed structure would not cause an increase in the 100 year and the 15-year water surface elevations. M3 was also tasked with performing an assessment to ensure ADA compliance, as well as designing a new enclosed storm sewer system adjacent to the new 70’ span bridge. The project was permitted through the Metropolitan St. Louis Sewer District and the US Army Corps of Engineers.