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Historic Bridges in Colorado

857 bridges built before 1951 in Colorado still in service today.

Bridges Built Before 1951

The United States has 857 bridges in Colorado built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.

Clear
Bridge State Condition Year Built Age (Years) ADT
SO. PLATTE RIVER Colorado Poor 1923 103 200
SPRING CREEK Colorado Fair 1923 103 1,603
BLUE RIVER Colorado Fair 1923 103 13
BEAVER CREEK Colorado Poor 1923 103 35
RANGER CREEK Colorado Fair 1923 103 42
SAND CREEK Colorado Fair 1923 103 4,100
SAND CREEK Colorado Fair 1923 103 66
GRAVEYARD CREEK Colorado Fair 1923 103 2,200
ST.CHARLES RIVER Colorado Fair 1923 103 1,251
DRAW Colorado Fair 1924 102 29,000
LOUDEN CANAL Colorado Fair 1924 102 34,000
ARKANSAS RIVER Colorado Fair 1924 102 9,000
ST. CHARLES RIVER Colorado Fair 1924 102 963
RIO GRANDE CANAL Colorado Fair 1924 102 53
MONTROSE AND DELTA CANAL Colorado Fair 1925 101 579
JACKSON LAKE OUTLET Colorado Fair 1925 101 410
CHERRY CREEK Colorado Fair 1925 101 6,301
BEAR CREEK Colorado Fair 1925 101 190
DRAW Colorado Fair 1925 101 190
WILLIAMS CREEK Colorado Fair 1925 101 18,000
BOGGS CREEK Colorado Fair 1925 101 1,500
L. Loveland Outlet Canal Colorado Fair 1925 101 13,399
DRAW Colorado Fair 1925 101 520
UPRR BNSF AR Colorado Poor 1925 101 6,216
FLORIDA RIVER Colorado Fair 1926 100 84
SOUTH PLATTE DITCH Colorado Good 1926 100 1,000
TEACHOUT CREEK Colorado Fair 1926 100 84,000
DRAW Colorado Fair 1926 100 91,000
GUNNISON RVR SR Colorado Fair 1926 100 1,082
GUNNISON RIVER Colorado Fair 1926 100 845
DRAW Colorado Fair 1926 100 9,200
DURAN ARROYO Colorado Fair 1926 100 36
REILLY CANYON CREEK Colorado Poor 1926 100 592
DRAW Colorado Fair 1926 100 15,000
BEAR CREEK Colorado Poor 1926 100 220
SQUAW CREEK Colorado Fair 1927 99 10
Middle St. Vrain Creek Colorado Fair 1927 99 56
North St. Vrain Creek Colorado Fair 1927 99 122
CRYSTAL CREEK Colorado Fair 1927 99 8,500
DRAW Colorado Fair 1927 99 840
Coal Creek Colorado Fair 1927 99 10,350
NORTH VETA CREEK Colorado Fair 1927 99 5,300
BESSEMER DITCH Colorado Fair 1927 99 2,493
CHERRY CREEK Colorado Fair 1928 98 7,892
DRAW Colorado Fair 1928 98 19,000
BRUSH HOLLOW CREEK Colorado Fair 1928 98 683
SPRING CREEK Colorado Fair 1928 98 350
DRAW Colorado Fair 1928 98 35,000
DRAW Colorado Fair 1928 98 35,000
GONZALES CANYON CREEK Colorado Poor 1928 98 790

About Historic Bridge Data

Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.

All Bridges Poor Condition Scour Critical Bridge Stats