Stahly Engineering has completed design and construction administration on over 50 bridges in the last 10 years. Our bridge team has become a valuable asset to many Montana County road and bridge departments, assisting with preparation of bridge inventories, inspection of bridges, management of emergency bridge replacement, funding, design, and construction inspection.
Funding bridge infrastructure through FEMA during an emergency or the Treasure State Endowment Program (TSEP) as part of a program of routine maintenance and replacement requires the assistance of skilled and knowledgeable engineers. Stahly Engineering has personnel who can assess conditions, provide accurate estimates of repair or replacement cost, analyze alternatives, and design and manage the final solution to keep local bridges safe and usable for the travelling public.
Kathy Thompson, P.E. and Nate Peressini, E.I. are both National Bridge Inventory certified inspectors. They provide bridge inventories and evaluations used to complete Preliminary Engineering Reports (PER) required for funding applications. Our Bridge Department is well versed in providing PERs for TSEP and, in conjunction with our on staff grant writer, have been highly successful in securing funding for a number of Montana County bridge projects.
In 2011/2012 Stahly Engineering designed 15 bridges due to significant flooding in Fergus and Judith Basin Counties, all of which were funded by FEMA. As a result of work done on those projects in Fergus County, Stahly Engineering was awarded the ACEC Award of Excellence for the Design and Bidding Practices for Replacement of Multiple Bridges Simultaneously. Stahly utilized design and bidding processes that allowed multiple bridges to be replaced quickly, efficiently and cost effectively following the flood event of 2011. Exploration of numerous bridge types, cost saving bid alternative practices, and packaging multiple projects for bid promoted quick recovery of the County transportation system.
Judith Basin County
North Hobson Bridge
The existing bridge located near the town of Hobson, Montana was replaced with a single span prestressed concrete beam superstructure founded on driven steel piles and concrete abutments. Judith Basin County commissioners and the road supervisor wanted a concrete structure, but also wanted to keep a gravel road surface across the new bridge deck. The design utilized concrete Bulb-Tee beams with an increased load capacity and curb height to accommodate the placement of 4” of gravel overtop the concrete beams.
Stahly Engineering assisted Petroleum County with the FEMA disaster relief process, and FEMA approved funding for a structure replacement project. The bridge replacement consisted of concrete bulb-tee beams, driven steel piles, cast in place concrete abutments, and W740 guardrail.