US 91

View Exhibit map

Hardy Bridge (Cascade County, Montana)
Built 1931
Through truss bridge over Missouri River on Old US 91
Open to traffic

Logan River Bridge (Cache County, Utah)
Built 1918; rehabilitated 1951
Concrete arch bridge over Logan River on US 91 in Logan
Open to traffic

Muddy River Bridge (Clark County, Nevada)
Built 1932-33; demolished ca. 1987
Lost two-span pony truss bridge over Muddy River on Old US 91
No longer exists, replaced by new bridge

Parkinson Rd Cub River Bridge (Franklin County, Idaho)
Built 1926
Concrete stringer bridge over Cub River on Parkison Rd (old US 91)
Open to traffic

Parkinson Rd Union Pacific Bridge (Franklin County, Idaho)
Bridge over Parkinson Rd (old US 91) on Union Pacific Railroad
Open to traffic

Pleasant Valley Creek Bridge (Clark County, Idaho)
Built 1934
Steel arch bridge over Pleasant Valley Creek on Old US 91
Open to traffic

Spencer Railroad Overpass (Clark County, Idaho)
Built 1936
Parker through truss bridge over UPRR on Old US 91
Open to traffic