The Grand Street Bridge was a double-leaf deck-girder bascule bridge in Bridgeport, Connecticut, United States, that spanned the Pequonnock River and connected Grand Street and Artic Street. It was one of three movable bridges planned by the City of Bridgeport in 1916 at the request of the War Department during World War I. Construction was completed in 1919, but the delays surrounding the construction went to the Connecticut Supreme Court in case of Edward DeV. Tompkins, Inc. vs. City of Bridgeport, Connecticut. The court ruled in favor of Tompkins and awarded damages equal to the contract. In 1936, the bridge had excessive settling and required the replacement of its southeast pier. As part of the repairs, a new floor and electrical system were installed. In 1965, the floor was replaced with a steel grate on I-beam floor. In 1984, the eastern approach span was replaced and the northwest trunnion post was reconstructed. The bridge was closed in the 1990s and dismantled in 1999. Construction Requests for bids for the Grand Street Bridge were announced in the trade publication Contractor, for the "substructure, superstructure and approaches". Originally the deadline was set for April 6, 1916, but it was later extended to May 6, 1916. The June 1916 issue of Contractor announced that Edward DeVoe Tompkins, Inc., obtained the contract with the lowest bid of $187,000. The contract, signed on May 16, 1916, stipulated that work on the bridge was to begin within 15 days and the project's original deadline would be September 1, 1917. The engineering firm which provided the design was the Strauss Bascule Bridge Company, and the fabricator of the steel was the Penn Bridge Company. The moving bridge had two bascule leaves, each long that were connected by a long deck-girder approach, for a total overall length of . The girders were in width; which were wider than the bascules. The angle-iron outriggers added another on each side, making the bridge's total width . The original floor was made of wooden blocks atop wooden planks. The contract called for the complete construction of the bridge, including the approaches on each side of the river and four piers with each consisting of two cylindrical columns of reinforced concrete. Construction of the bridge was complicated by the contract which stipulated that concrete had to be pumped dry, the concrete of each cylinder had to be poured in "one continuous operation"