Carbon County Bridge Report Card

Carbon County scores 77 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C77 / 100

Local infrastructure snapshot

Carbon County, Utah

Carbon County has 72 bridges in the National Bridge Inventory, with 2 rated poor and 6 rated scour-critical. Its poor-condition share of 2.8% is at or below the 3.5% statewide average. Poor-condition bridges carry about 94 daily vehicle crossings.

72Total Bridges

2Poor (2.8%)

57Fair (79.2%)

6Scour-Critical

Quote-Ready Local Facts

2.8%of county bridges are in poor condition, compared with 3.5% statewide and 6.7% nationally.

94daily vehicle crossings are on poor-condition bridges in the county.

6bridges are rated scour-critical, or 8.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Carbon County a Bridge Condition Exposure Score of 77/100 (C). The county has 72 bridges in the National Bridge Inventory, including 2 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 94 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	2.8%	5.6
Poor-condition traffic exposure	25	0.0% of measured traffic	0.0
Scour-critical bridge share	20	8.3%	16.7
Average age vs national baseline	10	51 years vs 48 nationally	1.1
Traffic-data completeness	5	368,944 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	2.8%
State Poor-Condition Share	3.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	8.3%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	94 vehicles/day

Bridges to Watch

Busiest Poor-Condition Bridge6558: Cottonwood C over Nine Mile Creek — 75 vehicles/day Oldest Listed BridgeCounty Road over Spring Canyon Wash — built in 1905 All County BridgesBrowse every bridge record in Carbon County.

Top Bridges to Watch in Carbon County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Road over Price River	Poor condition + traffic exposure	Poor	19	1914
6558: Cottonwood C over Nine Mile Creek	Poor condition + traffic exposure	Poor	75	1994
Us-191 (sr-191) over Willow Creek	Scour-critical foundation rating	Fair	3,058	1962
Us-191 (sr-191) over Willow Creek	Scour-critical foundation rating	Fair	2,375	1962
North Main Street over Spring Canyon Wash	Scour-critical foundation rating	Fair	1,386	1922
County Road over Miller Creek	Scour-critical foundation rating	Fair	252	1979
County Road over Kenilworth Wash	Scour-critical foundation rating	Fair	126	1999
Us-6 (sr-6) over Consumers Wash	High traffic	Fair	15,754	1951
Us-6 (sr-6) over Price River	High traffic	Fair	15,754	1952
Us-6 (sr-6) over Sr-55	High traffic	Fair	14,196	1985

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.