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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 1935 91 7,400
DRAW Colorado Fair 1935 91 5,700
DRAW Colorado Fair 1935 91 4,200
DRAW Colorado Fair 1935 91 5,500
DRAW Colorado Fair 1935 91 3,000
DRAW Colorado Fair 1935 91 3,000
DRAW Colorado Fair 1935 91 3,000
DRAW Colorado Fair 1935 91 3,000
DRAW Colorado Fair 1935 91 3,900
DRAW Colorado Fair 1935 91 3,900
AMITY CANAL Colorado Poor 1935 91 470
BUFFALO CREEK Colorado Fair 1935 91 470
RITO AGUA DULCE Colorado Fair 1935 91 12
TREMENTINA CREEK Colorado Poor 1935 91 8
TRIB. WEST CARRIZO CREEK Colorado Poor 1935 91 18
MOORE CANYON CREEK Colorado Poor 1935 91 30
OU CREEK Colorado Fair 1935 91 4
CANYON DEL AGUA CREEK Colorado Fair 1935 91 32
UNNAMED NATURAL DRAINAGE Colorado Fair 1935 91 3
POWELL ARROYO CREEK Colorado Fair 1935 91 109
LEITENSDORFER ARROYO Colorado Poor 1935 91 290
COON CREEK Colorado Poor 1935 91 19
SCHOOL HOUSE GULCH Colorado Poor 1935 91 14
DOVE CREEK Colorado Fair 1935 91 4,700
CROOKED ARROYO Colorado Fair 1935 91 320
DRAW Colorado Fair 1935 91 320
DRAW Colorado Fair 1935 91 4,100
DRAW Colorado Fair 1935 91 470
TAYLOR ARROYO Colorado Fair 1935 91 470
DRAW Colorado Fair 1935 91 330
CAT CREEK Colorado Fair 1935 91 420
BEAR CREEK Colorado Good 1935 91 3,000
DRAW Colorado Fair 1935 91 200
DRAW Colorado Fair 1935 91 200
TIMPAS CREEK Colorado Fair 1935 91 22
N FK CONEJOS RIVER Colorado Fair 1935 91 530
TRIB. NORTH BUTTE CREEK Colorado Fair 1935 91 6
TRIB MIDD PLUM CREEK Colorado Fair 1935 91 2
MONTE VISTA CANAL Colorado Fair 1935 91 76
DRAW Colorado Fair 1936 90 1,900
BIG THOMPSON RIVER Colorado Fair 1936 90 4,900
SOUTH PLATTE RIVER Colorado Fair 1936 90 12,500
CLEAR CREEK Colorado Fair 1936 90 111
YAMPA RIVER Colorado Fair 1936 90 1,700
LOST CREEK SR Colorado Poor 1936 90 135
CLEAR CREEK SR Colorado Poor 1936 90 917
EIGHT MILE CREEK Colorado Fair 1936 90 28
DRAW Colorado Fair 1936 90 3,700
DRAW Colorado Fair 1936 90 3,000
GRAPE CREEK Colorado Fair 1936 90 5,200

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