Burns & McDonnell

MoDOT Closing I-44 at Big Bend This Weekend for Bridge Replacement


MoDOT will close all lanes in both directions by 11pm this Friday, July 8 on Interstate 44 near Crestwood and Kirkwood to place girders and panels on the Big Bend Bridge as part of that $6 million replacement project.

Eureka-based Gershenson Construction Company is the general contractor performing the design-bid-build project, which is replacing the highway bridge originally built in 1967. Burns & McDonnell headed the design team with ABNA Engineering as a subcontractor.

MoDOT Resident Engineer Scott Washausen said construction began in February 2022 and is expected to complete by late October. MoDOT anticipates that the bridge will be open to traffic in late August.

“Traffic this weekend will be routed up and over the ramps,” said Washausen. “We plan to reopen three of the four lanes in each direction on I-44 by 5 a.m. on Monday, July 11. One lane in each direction will remain closed through August, as will Big Bend Boulevard over the interstate. This 55-year-old bridge is in poor condition and reaching the end of its useful life.”

Rebuilding the Big Bend Bridge allows MoDOT to raise the structure to interstate standards, according to Washausen, hopefully reducing the number of times that the bridge is struck. The replacement also allows MoDOT to bring the barrier walls and sidewalks along the bridge up to current design standards.

“We’re widening the bridge slightly to accommodate the new, updated sidewalks to meet ADA (Americans with Disabilities Act) requirements,” he said. “We’re adding extra left-turn lanes on the ramps from eastbound and westbound I-44. The bicycle lanes will remain the same width, but the new, wider bridge will allow for five-foot shoulder spacing to make it easier for cyclists and drivers to share the lane.”

Burns & McDonnell Awarded Commissioning Services Contract for New NGA Campus


Burns & McDonnell has been awarded a $9.5 million indefinite delivery indefinite quantity (IDIQ) contract from the National Geospatial-Intelligence Agency (NGA) for commissioning services to be provided during the programming, design and construction of a new NGA replacement campus in North St. Louis. The contract covers all of the project through design, construction and transition phases of the Next NGA West (N2W) campus.

The commissioning program is already underway in support of preliminary engineering design of facilities on the new 99-acre campus. Commissioning activities over the duration of the contract will support programming, planning, design, construction and operation of N2W facilities.

Commissioning is increasingly recognized as a critical step in the programming, design and construction of highly complex facilities because of the potential of reducing maintenance and operating costs, extending lifetimes of systems and equipment and ensuring comfortable and productive environments for building occupants. Commissioning professionals are now commonly engaged during early-phase project design as a strategy to better manage project budgets and reduce project risk.

“We are honored to be a part of a project that is so important to the city of St. Louis and to our national security,” says David Meyers, Manager of Commissioning for Burns & McDonnell. “These facilities will have some of the most complex systems ever constructed so commissioning will play a key role in getting this unprecedented program turned over to the NGA.”

The North St. Louis site was selected in early 2016. The NGA has been located in St. Louis since 1942. But the current campus could no longer support the NGA’s rapidly evolving mission as both an intelligence and combat support agency. The NGA fulfills many national security priorities in partnership with the intelligence community and Department of Defense.

Burns & McDonnell is a company made up of more than 5,300 engineers, architects, construction professionals, scientists, consultants and entrepreneurs with offices across the country and throughout the world.