Mn/DOT Bridge Number: Bridge No. L-3040
Bridge Type: Masonry arch
City/Township: Blakeley Twp.
Crossing: Co. Rd. 51 over unnamed stream
Year Built: 1878
Span Length: 15 feet
Length of Arch Barrel: 14 feet
Adapted from the National Register of Historic Places nomination form prepared by Jeffrey A. Hess. Bridge No. L-3040 was listed on the National Register of Historic Places in 1989.
Summary of Historic Significance
Bridge No. L-3040 is a single-span, stone-arch bridge that carries Co. Rd. 51 over a dry stream bed. Built of yellow coursed-ashlar limestone, the bridge displays flared stepped wing walls and a semicircular arch with a 15-foot span springing from grade level. Bridge No. L-3040 is historically significant as a rare and early example of "permanent" highway construction. The bridge is also significant as the state's oldest, known, surviving, stone-arch highway bridge. Despite alterations to the original parapet and some deterioration of the limestone, the bridge retains the most significant features of its original design.