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Bridge Replacement

Bridge Replacement http://m6g3q6n5.stackpathcdn.com/perch/resources/news/img1985-w450h300.jpg
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When the Maryland Transportation Authority (MDTA) needed to replace the deteriorated bridge deck on the I-895 bridge over the Patapsco River Flats, the contracted with consulting engineer, Rummel Klepper & Kahl (RK&K), to find an innovative, cost effective solution.

The desire to not disturb sensitive wetlands around the bridge foundations meant the superstructure replacement project would require a bridge deck weighing no more than 50 lbs. per sq. ft. including light-weight concrete, but with a high strength-to-weight ratio to handle the heavy traffic on this suburban Baltimore span. Leveraging our product knowledge to meet these special design requirements, L.B. Foster’s bridge products design team in Pittsburgh, PA, devised a cost-effective solution. The contract plans provided flexibility to allow the development of installation-friendly details, facilitating very rapid and cost-effective deck installation. In total, 177,000 sq. ft. of customized steel grid deck panels were delivered to McLean Contracting Company.

Benefits of the steel grid reinforced concrete deck design over alternates, such as rebar reinforced decking, include overall structural performance, speed of installation, high strength to weight ratio and significantly greater durability. The modular design helps streamline installation, minimizing traffic disruption on any project where it’s used.

“The flexible project specifications allowed us the opportunity to optimize product design, providing a superior product with improved installation details at a lower price point” said Mike Riley, Marketing Manager, L.B. Foster Fabricated Bridge Products. “The result was a lower bid price for the owner, an easier, accelerated installation for McLean and the bridge was returned to service more quickly for the motoring public.”

Read more about the I-895 project on Roads and Bridges.

lbfosterus en 22 May 2019 news/details/2019-05-22-maryland-i-895-bridge-project-over-the-patapsco-river-flats