Bowers Hydraulic Dredging Co. v. United States

Background

A private dredging company contracted with the United States in 1899 (and agreed to a 1901 supplement) to remove large amounts of material from a river channel near Wilmington, Delaware. The written contract and specifications said payment would be by the cubic yard "measured in place" using surveys before and after dredging, and warned bidders to inspect local conditions. The company asked an engineer whether the government would pay for earth that slid into the channel from the sides; the engineer replied that measurements would not include such sliding material. The company protested that answer, performed the work, received payments under protest, and later sued for additional sums.

Reasoning

The Court considered whether the contract language clearly required payment only for material measured in place and excluded payment for earth that slid in during work. Reading the contract as a whole, the Court found the specifications unambiguous: surveys before and after, stakes to mark lines, and explicit clauses saying no extra allowance would be made and that material deposited otherwise must be removed at the contractor’s expense. Because the contract’s plain terms controlled, the Court rejected the contractor’s attempt to import a trade or commercial meaning that would allow payment for sliding material. It also said the later supplemental contract was made with knowledge of the government's interpretation, so it did not change the result.

Real world impact

This ruling enforces clear written measurement rules in government construction contracts, limiting extra claims for unexpected slope slippage. Contractors on similar federal projects will be bound by pre‑and‑post survey methods and written specifications unless the contract expressly provides otherwise.