Minnesota Department of Transportation

511 Travel Info

Historic Bridges

Bridge L8505

Bridge L8505

Bridge L8505

See features of the bridge

History and significance

Bridge L8505 is a single-span, reinforced-concrete, filled-spandrel, barrel-arch bridge constructed in 1912. It carries Seven Bridges Road (also known as Snively Boulevard) over Amity Creek in Duluth, and was one of eight stone-faced bridges along the boulevard that were designed by the Minneapolis firm of Morrell and Nichols. Four of the historic bridges, including L8505, remain. Seven Bridges Road is a contributing segment of the Skyline Parkway Historic District and Bridge L8505 is significant as a contributing structure to the district.


Rehabilitation activities

Bridge L8505Bridge L8505 underwent a major rehabilitation in 2001 where the entire bridge was repointed, the arch and walls were excavated and waterproofed, a drainage system was installed, the roadway was replaced, the railing was disassembled and re-built, the underside of the arch was repaired, and the north slopes were protected with riprap. The bridge abutments were scoured during the June 2012 flood event. A repair plan has been prepared and work to protect the abutments will be conducted in the summer of 2014.


City of Duluth (St. Louis County)
Latitude, Longitude: 46.85812834, -92.01301847

Bridge features

Bridge L8505

Neoclassical architectural details found on the reinforced-concrete arch with rustic stone masonry headwalls, wingwalls, and railings. The bridge features Neoclassical stylistic treatment as seen in the defined abutment pilasters, a defined stringcourse separating the railing, and heavy stone caps atop the railing and pilasters.

Bridge L8505

The bridge is located along the Seven Bridges Road, a contributing segment of the Skyline Parkway.