Modjeski and Masters was selected to lead the Henry G. Gilmerton Bridge Replacement Project by the Virginia Department of Transportation. Shown here is a copy of the Preliminary Conceptual Study prepared by Modjeski and Masters and major subconsultant Gannett Fleming which detailed replacement alternatives.
In 2001, Modjeski and Masters went to work on design plans for the selected Vertical-Lift Bridge alternative. The new bridge would be 250-feet long and 89-feet wide which would make it one of the widest lift spans ever designed. The bridge was designed to be constructed over-top of the existing bascule span so that traffic would be minimally interrupted.
Design Work is Completed and Construction Starts on the New Gilmerton Bridge Substructure
With construction of the vertical-lift superstructure significantly completed, the float-in operation of the main lift span could begin. On January 7, 2013, the main span was successfully floated in place and connected by the project contractor, PCL. Construction of the approach spans would continue for several more months.
On January 14, 2014, the new Henry G. Gilmerton Bridge was completed. The new bridge successfully met the need for increased traffic capacity while not interrupting traffic flow throughout construction.
The Gilmerton Bridge Replacement Project receives numerous awards including the ACEC Virginia "Grand Award", the Virginia Transportation Construction Alliance "Transportation Engineering Award" and the ABCD Susquehanna Chapter "Outstanding New Long Span Bridge".