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Friday, 25 September, 2015

William Preston Lane, Jr. Memorial Bridge – West Bound Lane Trusses


Summary

This project was to replace the deck of the Westbound Suspension and Through Truss Spans and other miscellaneous repairs of the William Preston Lane, Jr. (Bay) Bridge spanning Anne Arundel and Queen Anne's Counties, MD. The concrete deck was replaced with pre-fabricated panels. The process involved removing sections of the old deck and installing 300 concrete panels on the suspension and through truss sections of the three-lane bridge, which originally opened in 1973. The through truss span is the part of the bridge, closer to Kent Island, that has structural steel over the roadway. The panels were installed during overnight hours. Each night the plan was to remove the existing concrete from the deck and then drop in the pre-fabricated panel before the next morning's rush hour.

The contractor performed a survey of steel height which lead them to believe that there was an error in the plans. The contractor submitted a Request for Equitable Adjustment (REA) to the Maryland Transportation Authority (MDTA) based on this survey. The contractor claimed the pre-fabricated panels could not be placed without major modifications being made in order to complete deck replacement on the westbound structure.  Those modifications would have significant cost implications.  

O'C&L assisted MDTA in its review of the subsequent claim submitted by the contractor. The claim was analyzed for both entitlement and contract damages. O'C&L participated in several meetings between MDTA and the contractor. O'C&L coordinated the services of specialty subconsultants on this assignment; O'C&L provided expert testimony for MDTA before the Board.

O'C&L performed an analysis of the original survey data and found that the contractor’s survey data was severely flawed. The deck was ultimately constructed with only minor adjustments.



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