Linn County Bridge Report Card

Linn County scores 85 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B85 / 100

Local infrastructure snapshot

Linn County, Kansas

Linn County has 257 bridges in the National Bridge Inventory, with 13 rated poor and 5 rated scour-critical. Its poor-condition share of 5.1% is at or below the 5.2% statewide average. Poor-condition bridges carry about 474 daily vehicle crossings.

257Total Bridges

13Poor (5.1%)

79Fair (30.7%)

5Scour-Critical

Quote-Ready Local Facts

5.1%of county bridges are in poor condition, compared with 5.2% statewide and 6.7% nationally.

474daily vehicle crossings are on poor-condition bridges in the county.

5bridges are rated scour-critical, or 1.9% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Linn County a Bridge Condition Exposure Score of 85/100 (B). The county has 257 bridges in the National Bridge Inventory, including 13 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 474 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	5.1%	10.1
Poor-condition traffic exposure	25	0.4% of measured traffic	0.3
Scour-critical bridge share	20	1.9%	3.9
Average age vs national baseline	10	50 years vs 48 nationally	0.8
Traffic-data completeness	5	127,261 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	5.1%
State Poor-Condition Share	5.2%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.9%
Average Bridge Age	50 years
Poor-Condition Traffic Exposure	474 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeRs 1204 26 over Little Sugar Creek — 164 vehicles/day Oldest Listed BridgeLocal Rd. 59 over Trib. Little Sugar Creek — built in 1910 All County BridgesBrowse every bridge record in Linn County.

Top Bridges to Watch in Linn County

Bridge	Reason	Condition	Daily Traffic	Year Built
Local Rd. 18a over Trib. To Goodrich Creek	Poor condition + traffic exposure	Poor	25	1985
Rs 1204 26 over Little Sugar Creek	Poor condition + traffic exposure	Poor	164	1966
Local Rd. 55 over Mine Creek	Poor condition + traffic exposure	Poor	100	1930
Local Rd. 52 over Little Sugar Creek	Poor condition + traffic exposure	Poor	40	1913
Local Rd. 16 over Middle Creek	Poor condition + traffic exposure	Poor	30	1937
Local Rd. 8 over Middle Creek	Poor condition + traffic exposure	Poor	20	1914
Local Rd. 72a over Trib To Laberdie Creek	Poor condition + traffic exposure	Poor	20	1935
Local Rd. 31 over Big Sugar Creek	Poor condition + traffic exposure	Poor	20	1970
Local Rd. 32 over Trib. Marais Des Cygnes	Poor condition + traffic exposure	Poor	20	1984
Local Rd. 2 over Trib. To Middle Creek	Poor condition + traffic exposure	Poor	15	1920

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.