Dolores River Bridge, Truss bridge in Bedrock, Colorado, United States

The Dolores River Bridge was a through truss bridge that carried State Highway 90 over the Dolores River, 0.4 miles east of Bedrock, Colorado. Its steel structure measured 129 feet long and 25.1 feet wide, with a main span of 125 feet and a roadway width of 24 feet. It was designed by the Colorado Department of Highways and fabricated by Midwest Steel & Iron Works.

The Colorado Department of Highways designed the bridge, Midwest Steel & Iron Works fabricated it, and Gardner Construction Company installed it in 1952 at milepost 15.22 on State Highway 90. In 2014 inspectors found a crack in a main beam, so CDOT closed the span and set up a one-lane temporary crossing. The old truss was dismantled and its labeled pieces stored; a precast-concrete girder bridge opened in 2017.

The bridge was listed on the National Register of Historic Places under reference number 02001150. Its truss design was drawn up by the Colorado Department of Highways and the steel fabricated by Midwest Steel & Iron Works. The Historic American Engineering Record documented it as CO-102, with 19 photographs and 18 data pages.

The 1952 truss no longer carries traffic: a one-lane temporary crossing went in after the 2014 crack, and the precast-concrete girder bridge that replaced it opened in 2017. The dismantled truss pieces were labeled and stored in a warehouse. The site is at milepost 15.22 on State Highway 90, 0.4 miles east of Bedrock.

The dismantled pieces of the bridge are being kept with hopes they may one day be converted into a pedestrian and bicycle path. This reflects how historical structures might find new purposes after replacement.