Owyhee County Bridge Report Card

Owyhee County scores 63 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D63 / 100

Local infrastructure snapshot

Owyhee County, Idaho

Owyhee County has 49 bridges in the National Bridge Inventory, with 4 rated poor and 7 rated scour-critical. Its poor-condition share of 8.2% is above the 5.4% statewide average. Poor-condition bridges carry about 230 daily vehicle crossings.

49Total Bridges

4Poor (8.2%)

29Fair (59.2%)

7Scour-Critical

Quote-Ready Local Facts

8.2%of county bridges are in poor condition, compared with 5.4% statewide and 6.7% nationally.

230daily vehicle crossings are on poor-condition bridges in the county.

7bridges are rated scour-critical, or 14.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Owyhee County a Bridge Condition Exposure Score of 63/100 (D). The county has 49 bridges in the National Bridge Inventory, including 4 in poor condition and 7 rated scour-critical. Poor-condition bridges carry about 230 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	8.2%	16.3
Poor-condition traffic exposure	25	0.5% of measured traffic	0.4
Scour-critical bridge share	20	14.3%	20.0
Average age vs national baseline	10	49 years vs 48 nationally	0.5
Traffic-data completeness	5	47,150 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	8.2%
State Poor-Condition Share	5.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	14.3%
Average Bridge Age	49 years
Poor-Condition Traffic Exposure	230 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSage Road over Succor Creek — 90 vehicles/day Oldest Listed BridgeRiver Run Road over E.fk.jarbidge River — built in 1922 All County BridgesBrowse every bridge record in Owyhee County.

Top Bridges to Watch in Owyhee County

Bridge	Reason	Condition	Daily Traffic	Year Built
Sage Road over Succor Creek	Poor condition + traffic exposure	Poor	90	1930
River Road over Vinson Wash	Poor condition + traffic exposure	Poor	60	1930
Sheep Camp RD over Grandview Irrigation Cnl	Poor condition + traffic exposure	Poor	60	1991
Salmon Creek RD over Reynolds Creek	Poor condition + traffic exposure	Poor	20	1960
US 95 over Snake River;homedale Br.	Scour-critical foundation rating	Fair	11,000	1969
SH 78 over Snake R.;indian Cove Br.	Scour-critical foundation rating	Fair	1,600	1967
SH 167 over Snake River;grandview Br	Scour-critical foundation rating	Fair	1,600	1970
SH 51 over Bruneau River	Scour-critical foundation rating	Fair	1,500	1955
SH 78 over Brown Creek	Scour-critical foundation rating	Fair	880	1954
SH 78 over Castle Creek	Scour-critical foundation rating	Fair	580	1955

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.