The ERT Bridge over Blacks Fork near Fort Bridger, Wyoming, was listed on the National Register of Historic Places in 1985 as part of a thematic study on early 20th century steel truss bridges in Wyoming. The ERT Bridge is a Warren pony truss bridge spanning with a width of . Set on concrete abutments, the ERT Bridge was built around 1920 by Uinta County. It is an example of a transitional design from locally built bridges to standardized State designs