Harney County Bridge Report Card

Harney 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

Harney County, Oregon

Harney County has 128 bridges in the National Bridge Inventory, with 2 rated poor and 13 rated scour-critical. Its poor-condition share of 1.6% is at or below the 5.1% statewide average. Poor-condition bridges carry about 187 daily vehicle crossings.

128Total Bridges

2Poor (1.6%)

61Fair (47.7%)

13Scour-Critical

Quote-Ready Local Facts

1.6%of county bridges are in poor condition, compared with 5.1% statewide and 6.7% nationally.

187daily vehicle crossings are on poor-condition bridges in the county.

13bridges are rated scour-critical, or 10.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Harney County a Bridge Condition Exposure Score of 77/100 (C). The county has 128 bridges in the National Bridge Inventory, including 2 in poor condition and 13 rated scour-critical. Poor-condition bridges carry about 187 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	1.6%	3.1
Poor-condition traffic exposure	25	0.3% of measured traffic	0.2
Scour-critical bridge share	20	10.2%	20.0
Average age vs national baseline	10	41 years vs 48 nationally	0.0
Traffic-data completeness	5	59,334 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	1.6%
State Poor-Condition Share	5.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	10.2%
Average Bridge Age	41 years
Poor-Condition Traffic Exposure	187 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSouth Harney Road over Silver Creek — 137 vehicles/day Oldest Listed BridgePatrol Road over Center Canal — built in 1940 All County BridgesBrowse every bridge record in Harney County.

Top Bridges to Watch in Harney County

Bridge	Reason	Condition	Daily Traffic	Year Built
South Harney Road over Silver Creek	Poor condition + traffic exposure	Poor	137	1975
8244: Steens Mount over Kueny Creek	Poor condition + traffic exposure	Poor	50	1973
US 20 (hwy 007) over Silver Creek	Scour-critical foundation rating	Fair	2,325	1956
Or 78 (hwy 442) over Silvies River(3rd Br)	Scour-critical foundation rating	Fair	1,858	1971
Or 78 (hwy 442) over Silvies Slough(4th Br)	Scour-critical foundation rating	Fair	1,858	1971
Or 78 (hwy 442) over Silvies Slough(6th Br)	Scour-critical foundation rating	Good	1,729	1971
Or 78 (hwy 442) over Silvies Slough(9th Br)	Scour-critical foundation rating	Good	1,729	1971
Or 78 (hwy 442) over Silvies Slough(11th Br)	Scour-critical foundation rating	Good	1,299	1971
Or 78 (hwy 442) over Foley Slough(13th Br)	Scour-critical foundation rating	Fair	1,299	1971
Or 78 (hwy 442) over Silvies Slough(15th Br)	Scour-critical foundation rating	Fair	1,299	1971

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.