Klamath County Bridge Report Card

Klamath 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

Klamath County, Oregon

Klamath County has 248 bridges in the National Bridge Inventory, with 11 rated poor and 17 rated scour-critical. Its poor-condition share of 4.4% is at or below the 5.1% statewide average. Poor-condition bridges carry about 1,675 daily vehicle crossings.

248Total Bridges

11Poor (4.4%)

139Fair (56.0%)

17Scour-Critical

Quote-Ready Local Facts

4.4%of county bridges are in poor condition, compared with 5.1% statewide and 6.7% nationally.

1,675daily vehicle crossings are on poor-condition bridges in the county.

17bridges are rated scour-critical, or 6.9% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Klamath County a Bridge Condition Exposure Score of 77/100 (C). The county has 248 bridges in the National Bridge Inventory, including 11 in poor condition and 17 rated scour-critical. Poor-condition bridges carry about 1,675 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	4.4%	8.9
Poor-condition traffic exposure	25	0.4% of measured traffic	0.3
Scour-critical bridge share	20	6.9%	13.7
Average age vs national baseline	10	46 years vs 48 nationally	0.0
Traffic-data completeness	5	466,810 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	4.4%
State Poor-Condition Share	5.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	6.9%
Average Bridge Age	46 years
Poor-Condition Traffic Exposure	1,675 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeE Langell Vly RD over Drain Ditch — 446 vehicles/day Oldest Listed BridgeSun CR Co-op Road over Sun Creek — built in 1900 All County BridgesBrowse every bridge record in Klamath County.

Top Bridges to Watch in Klamath County

Bridge	Reason	Condition	Daily Traffic	Year Built
Ivory Pine Road over Meryl Creek	Poor condition + traffic exposure	Poor	434	1970
E Langell Vly RD over Drain Ditch	Poor condition + traffic exposure	Poor	446	1976
E Langell Vly RD over Lost River	Poor condition + traffic exposure	Poor	398	1967
Odell Lk Access RD over Trapper Creek	Poor condition + traffic exposure	Poor	130	1982
Floating Point RD over Little Deschutes River	Poor condition + traffic exposure	Poor	73	1980
Road over Long Branch Creek	Poor condition + traffic exposure	Poor	50	1958
Road over South Fork Sprague River	Poor condition + traffic exposure	Poor	50	1961
Saddle Mt Pit RD over Sprague River	Poor condition + traffic exposure	Poor	45	1965
Road over Williamson River	Poor condition + traffic exposure	Poor	23	1969
Road over Brown Creek	Poor condition + traffic exposure	Poor	20	1967

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.