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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
DRAW Colorado Fair 1936 90 3,900
TWIN CREEK Colorado Fair 1936 90 3,900
DRAW Colorado Fair 1936 90 5,400
MUDDY CREEK Colorado Fair 1936 90 300
ALKALI CREEK Colorado Fair 1936 90 300
CEDAR WASH Colorado Fair 1936 90 25,000
BLUE CREEK Colorado Good 1936 90 2,800
DRAW Colorado Fair 1936 90 3,600
HAYDEN CREEK Colorado Fair 1936 90 3,600
E. FORK HAYDEN CREEK Colorado Fair 1936 90 3,600
TEXAS CREEK Colorado Fair 1936 90 3,300
OAK CREEK Colorado Fair 1936 90 3,300
FOX CANYON CREEK Colorado Fair 1936 90 3,600
DRAW Colorado Poor 1936 90 2,500
BAKERS GULCH Colorado Fair 1936 90 2,500
OAK CREEK Colorado Fair 1936 90 5,900
BIG DRY CREEK Colorado Poor 1936 90 6,600
BESSEMER DITCH Colorado Fair 1936 90 17,000
DRAW Colorado Fair 1936 90 480
SPRING CREEK Colorado Poor 1936 90 339
HORSE CREEK Colorado Fair 1936 90 340
DRAW Colorado Fair 1936 90 450
DRAW Colorado Fair 1936 90 2,200
WILLOW CREEK Colorado Poor 1936 90 2,600
WILLOW CREEK OVERFLOW Colorado Fair 1936 90 2,600
TRIB. BURRO CANYON CREEK Colorado Fair 1936 90 64
Little Thompson River Colorado Fair 1936 90 42
IRON SPRINGS ARROYO Colorado Fair 1936 90 470
IRON SPRINGS ARROYO Colorado Fair 1936 90 470
DRAW Colorado Fair 1936 90 470
MANCOS RIVER Colorado Poor 1936 90 530
CULEBRA CREEK Colorado Fair 1936 90 800
RITO SECO CREEK Colorado Good 1936 90 440
ZARACILLO CANYON Colorado Fair 1936 90 520
S FK PURGATOIRE RIVER Colorado Fair 1936 90 520
DRAW Colorado Poor 1936 90 520
BURRO RIVER Colorado Fair 1936 90 1,500
NORTH BUTTE CREEK Colorado Fair 1936 90 8
TWO BUTTES CREEK Colorado Fair 1936 90 45
CAT CREEK Colorado Fair 1936 90 13
White River Colorado Fair 1936 90 57
White River Colorado Fair 1936 90 146
FOURMILE CREEK Colorado Fair 1936 90 219
CACHE LA POUDRE RIVER Colorado Fair 1937 89 100
SALTER CANYON Colorado Fair 1937 89 63
CABIN CANYON Colorado Fair 1937 89 27
COAL CREEK Colorado Good 1937 89 37
NARRAGUINNEP CANYON Colorado Fair 1937 89 20
CANAL Colorado Fair 1937 89 1,200
POINT-O-ROCKS CANAL Colorado Fair 1937 89 1,100

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