Historic Bridges in Wyoming

191 bridges built before 1951 in Wyoming still in service today.

Bridges Built Before 1951

The United States has 191 bridges in Wyoming 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
Badwater Creek Wyoming Poor 1940 86 22
Elk Creek Wyoming Poor 1940 86 343
New Fork River Wyoming Poor 1940 86 40
Uinta Ditch No. 3 Wyoming Poor 1940 86 73
Greasewood Creek Wyoming Fair 1940 86 259
Mill Creek Wyoming Poor 1940 86 2
Bear River Wyoming Poor 1941 85 2,961
Burlington Supply Ditch Wyoming Fair 1941 85 14,340
First Sand Creek Wyoming Fair 1942 84 458
Unnamed Draw Wyoming Fair 1942 84 2,401
North Fork Powder River Wyoming Fair 1942 84 229
Grease Wood Draw Wyoming Poor 1942 84 2,401
Unnamed Draw Wyoming Fair 1942 84 1,126
Unnamed Draw Wyoming Good 1942 84 648
CRAZY WOMAN CREEK Wyoming Fair 1945 81 62
Little Big Horn River Wyoming Fair 1945 81 116
Horse Creek Wyoming Fair 1946 80 44
Little Bear Creek Wyoming Fair 1946 80 47
Unnamed Draw Wyoming Fair 1946 80 3,127
Blacks Fork River Wyoming Fair 1946 80 1,126
UPRR Wyoming Fair 1946 80 3,065
Hoback River Wyoming Fair 1946 80 2,509
Floodwater Creek Wyoming Poor 1946 80 1,530
Little Goose Creek Wyoming Fair 1946 80 1,679
BNSF Railway Wyoming Fair 1946 80 105
Unnamed Draw Wyoming Fair 1946 80 7,222
Unnamed Draw Wyoming Fair 1946 80 7,563
Unnamed Draw Wyoming Fair 1946 80 7,222
Unnamed Draw Wyoming Fair 1946 80 741
Sage Creek Wyoming Fair 1947 79 2,086
Unnamed Draw Wyoming Fair 1947 79 648
Little Piney Creek Wyoming Good 1947 79 611
Boysen Dam Spillway Wyoming Fair 1948 78 5
SHELL CREEK Wyoming Good 1948 78 45
Rock Creek Wyoming Poor 1948 78 153
Unnamed Draw Wyoming Good 1948 78 85
S Fork Sundance Creek Wyoming Fair 1948 78 556
UPRR Wyoming Fair 1948 78 1,302
Sand Draw Wyoming Fair 1948 78 1,662
Dry Draw Wyoming Good 1948 78 1,387
Alkali Creek Wyoming Fair 1948 78 216
Medicine Lodge Creek Wyoming Fair 1948 78 216
Cottonwood Creek Wyoming Fair 1948 78 621
Sundance Creek Wyoming Fair 1948 78 556
N Fork Sundance Creek Wyoming Fair 1948 78 556
Dry Draw Wyoming Good 1948 78 774
Austin Creek Wyoming Fair 1948 78 123
WIND RIVER Wyoming Good 1949 77 50
WARM SPRINGS CREEK Wyoming Good 1949 77 50
Smiths Fork River Wyoming Fair 1949 77 782

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.