Duchesne County Bridge Report Card

Duchesne County scores 68 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D68 / 100

Local infrastructure snapshot

Duchesne County, Utah

Duchesne County has 89 bridges in the National Bridge Inventory, with 6 rated poor and 8 rated scour-critical. Its poor-condition share of 6.7% is above the 3.5% statewide average. Poor-condition bridges carry about 1,097 daily vehicle crossings.

89Total Bridges

6Poor (6.7%)

65Fair (73.0%)

8Scour-Critical

Quote-Ready Local Facts

6.7%of county bridges are in poor condition, compared with 3.5% statewide and 6.7% nationally.

1,097daily vehicle crossings are on poor-condition bridges in the county.

8bridges are rated scour-critical, or 9.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Duchesne County a Bridge Condition Exposure Score of 68/100 (D). The county has 89 bridges in the National Bridge Inventory, including 6 in poor condition and 8 rated scour-critical. Poor-condition bridges carry about 1,097 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	6.7%	13.5
Poor-condition traffic exposure	25	0.9% of measured traffic	0.7
Scour-critical bridge share	20	9.0%	18.0
Average age vs national baseline	10	39 years vs 48 nationally	0.0
Traffic-data completeness	5	122,865 measured daily crossings	0.0

Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.

County Comparisons

County Poor-Condition Share	6.7%
State Poor-Condition Share	3.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	9.0%
Average Bridge Age	39 years
Poor-Condition Traffic Exposure	1,097 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSr-35 over Duchesne River — 783 vehicles/day Oldest Listed BridgeCounty Road over Duchesne River — built in 1942 All County BridgesBrowse every bridge record in Duchesne County.

Top Bridges to Watch in Duchesne County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Road over Duchesne River	Poor condition + traffic exposure	Poor	63	1942
Boys Ranch RD over Lake Fork Overflow Chan.	Poor condition + traffic exposure	Poor	63	1999
Sr-35 over Duchesne River	Poor condition + traffic exposure	Poor	783	1967
IRR BIA RTE 7 over Uintah River	Poor condition + traffic exposure	Poor	100	1963
Sundown Ridge Rd. over Current Creek	Poor condition + traffic exposure	Poor	63	1999
County Road over Duchesne River	Poor condition + traffic exposure	Poor	25	1952
County Road over Yellowstone Creek	Scour-critical foundation rating	Fair	202	1985
County Road over Lake Fork Creek	Scour-critical foundation rating	Fair	189	1992
Beaver Sld.rd. Co. over Lake Fork Overflow Chan.	Scour-critical foundation rating	Fair	189	1999
County Road over Duchesne River	Scour-critical foundation rating	Fair	69	1965

Important safety note

Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.