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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
GRANEROS CREEK Colorado Fair 1928 98 170
I25 DRGWRR FOUNTAIN CRK Colorado Fair 1928 98 6,482
Williams Fork River Colorado Fair 1929 97 166
CHERRY CREEK Colorado Fair 1929 97 4,392
SAND CREEK Colorado Good 1929 97 17,500
DRAW Colorado Good 1929 97 19,000
BOB CREEK CANAL Colorado Poor 1929 97 1,400
BNSF RR Colorado Poor 1929 97 713
CEMENT CREEK Colorado Poor 1929 97 647
CONEJOS RIV.OVERFLOW Colorado Poor 1929 97 3,200
CONEJOS RIVER Colorado Fair 1929 97 3,200
ARAPAHO CREEK Colorado Fair 1930 96 1
LA PLATA RIVER Colorado Fair 1930 96 92
MCELMO CREEK Colorado Fair 1930 96 62
POWELL DITCH Colorado Fair 1930 96 690
PETERSON CANAL Colorado Fair 1930 96 720
DRAW Colorado Fair 1930 96 720
FARMERS HIGHLINE CANAL Colorado Fair 1930 96 3,182
FARMERS HIGHLINE CANAL Colorado Fair 1930 96 16,690
CROKE CANAL Colorado Fair 1930 96 16,690
LAKE CANAL Colorado Fair 1930 96 25,000
BEAR CREEK | MEADOW DRIV Colorado Fair 1930 96 407
PLUM CREEK Colorado Fair 1930 96 21
SHOOKS RUN Colorado Fair 1930 96 4,652
SHOOKS RUN Colorado Fair 1930 96 1,422
NORTH FORK GUNNISON RVR Colorado Fair 1930 96 310
SOUTH BOULDER CREEK Colorado Fair 1930 96 388
Pleas. Valley Lake Canal Colorado Fair 1930 96 4,030
ARKANSAS RIVER Colorado Poor 1930 96 132
RED GULCH Colorado Fair 1930 96 213
HIGHLINE CANAL Colorado Fair 1930 96 720
HUERFANO RIVER Colorado Fair 1930 96 55
IRONSTONE CANAL Colorado Fair 1930 96 940
DRAW Colorado Fair 1930 96 17,000
FOUNTAIN CREEK Colorado Poor 1930 96 11,000
COCKELBURR CREEK Colorado Fair 1930 96 800
N. FK. SMOKY HILL RIVER Colorado Fair 1930 96 7
TRIB. TO LANDSMAN CREEK Colorado Fair 1930 96 262
BRANTZELL ARROYO SR Colorado Fair 1930 96 15,000
THOMPSON CREEK Colorado Poor 1930 96 13
DRY CREEK Colorado Poor 1930 96 10
SAN FRANCISCO CREEK Colorado Poor 1930 96 8
APISHAPA RIVER Colorado Fair 1930 96 54
CHANNEY ARROYO Colorado Fair 1930 96 16
CANYON DEL AGUA CREEK Colorado Fair 1930 96 38
RATON CREEK Colorado Fair 1930 96 75
PICKETWIRE DITCH Colorado Fair 1930 96 124
APISHAPA RIVER Colorado Fair 1930 96 17
RITO SECO CREEK Colorado Fair 1930 96 13
Union Ditch Colorado Fair 1930 96 202

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