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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 Good 1934 92 130
ARCHULETA CREEK Colorado Fair 1934 92 130
CHACUACO CREEK Colorado Fair 1934 92 130
EAGLE RIVER/RR Colorado Poor 1934 92 231
BOX ELDER CREEK Colorado Poor 1935 91 44
FRENCHMAN CREEK Colorado Poor 1935 91 1,900
TRIBUTARY OF PLUM CREEK Colorado Fair 1935 91 53
SNAKE ARROYO Colorado Fair 1935 91 11
SAND ARROYO Colorado Fair 1935 91 32
SAND ARROYO Colorado Fair 1935 91 14
TRIB. OF SAND ARROYO Colorado Fair 1935 91 10
TRIB. OF SAND ARROYO Colorado Fair 1935 91 6
TRIB N.FORK CIMARRON RVR Colorado Fair 1935 91 58
N. FORK CIMARRON RIVER Colorado Fair 1935 91 20
SOUTH FORK SAND ARROYO Colorado Fair 1935 91 13
UNNAMED CREEK Colorado Fair 1935 91 22
TRIB. OF CIMARRON RIVER Colorado Fair 1935 91 3
NORTH UTE CANYON Colorado Fair 1935 91 46
TRIB. OF E. CARRIZO CRK Colorado Fair 1935 91 19
WEST CARRIZO CREEK Colorado Fair 1935 91 23
Boulder Creek Colorado Fair 1935 91 846
Coal Creek Colorado Fair 1935 91 1,080
DODGE AVENUE/SHORT STREE Colorado Fair 1935 91 2,800
UP RR Colorado Poor 1935 91 2,200
HIGHLINE CANAL Colorado Fair 1935 91 5,061
HARDSCRABBLE CREEK Colorado Poor 1935 91 22
DRAW Colorado Fair 1935 91 23,000
SEQUINE GULCH Colorado Fair 1935 91 23,000
SURVEYOR CREEK Colorado Fair 1935 91 2,900
BNSF RR Colorado Fair 1935 91 2,100
WEST BURLINGTON CANAL Colorado Fair 1935 91 28,000
LITTLE DRY CREEK Colorado Poor 1935 91 31,496
SPRING CREEK Colorado Fair 1935 91 90
LITTLE HORSE CREEK Colorado Fair 1935 91 14
STEELS FORK CREEK Colorado Fair 1935 91 35
MUSTANG CREEK Colorado Fair 1935 91 20
BIG SANDY CREEK Colorado Fair 1935 91 100
UP RR SR Colorado Poor 1935 91 3,246
DRAW SR Colorado Fair 1935 91 2,984
STRAINS GULCH Colorado Fair 1935 91 4,000
DRAW Colorado Fair 1935 91 4,000
HIGHLINE CANAL Colorado Fair 1935 91 10,500
CHERRY CREEK Colorado Fair 1935 91 47,000
BEAVER CREEK Colorado Fair 1935 91 560
Larimer Co. Canal No. 2 Colorado Fair 1935 91 24,414
EIGHT MILE CREEK Colorado Poor 1935 91 38
LOST MAN CREEK Colorado Fair 1935 91 1,300
BRAKETT CREEK Colorado Fair 1935 91 5,700
DRAW Colorado Fair 1935 91 5,700
DRAW Colorado Fair 1935 91 4,200

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