Linn County Bridge Report Card

Linn County scores 41 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

F41 / 100

Local infrastructure snapshot

Linn County, Oregon

Linn County has 564 bridges in the National Bridge Inventory, with 95 rated poor and 78 rated scour-critical. Its poor-condition share of 16.8% is above the 5.1% statewide average. Poor-condition bridges carry about 86,769 daily vehicle crossings.

564Total Bridges

95Poor (16.8%)

363Fair (64.4%)

78Scour-Critical

Quote-Ready Local Facts

16.8%of county bridges are in poor condition, compared with 5.1% statewide and 6.7% nationally.

86,769daily vehicle crossings are on poor-condition bridges in the county.

78bridges are rated scour-critical, or 13.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Linn County a Bridge Condition Exposure Score of 41/100 (F). The county has 564 bridges in the National Bridge Inventory, including 95 in poor condition and 78 rated scour-critical. Poor-condition bridges carry about 86,769 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	16.8%	33.7
Poor-condition traffic exposure	25	3.2% of measured traffic	2.4
Scour-critical bridge share	20	13.8%	20.0
Average age vs national baseline	10	54 years vs 48 nationally	2.5
Traffic-data completeness	5	2,672,448 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	16.8%
State Poor-Condition Share	5.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	13.8%
Average Bridge Age	54 years
Poor-Condition Traffic Exposure	86,769 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS 20 (hwy 16) EB over Lebanon Ditch — 18,798 vehicles/day Oldest Listed BridgeUS 20 (hwy 16) EB over Lebanon Ditch — built in 1921 All County BridgesBrowse every bridge record in Linn County.

Top Bridges to Watch in Linn County

Bridge	Reason	Condition	Daily Traffic	Year Built
Salem AVE over Cox Creek	Poor condition + traffic exposure	Poor	11,330	1940
Or 99e (hwy 58) over Creek	Poor condition + traffic exposure	Poor	3,351	1954
Or 226 (hwy 211) over Jordan Creek	Poor condition + traffic exposure	Poor	1,786	1963
3rd AVE over Calapooia Rv	Poor condition + traffic exposure	Poor	1,236	1960
Mcdowell CR Drive over Willow Creek EB	Poor condition + traffic exposure	Poor	670	1958
Boston Mill RD over Calapooia River	Poor condition + traffic exposure	Poor	299	1962
Road over Puzzle CR	Poor condition + traffic exposure	Poor	5	1954
US 20 (hwy 16) EB over Lebanon Ditch	Poor condition + traffic exposure	Poor	18,798	1921
Columbus St. over Oak Creek Oflow	Poor condition + traffic exposure	Poor	4,841	1991
9th AVE over Santiam-albany Canal	Poor condition + traffic exposure	Poor	2,575	1930

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.