Logan County Bridge Report Card

Logan County scores 75 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C75 / 100

Local infrastructure snapshot

Logan County, Colorado

Logan County has 182 bridges in the National Bridge Inventory, with 16 rated poor and 4 rated scour-critical. Its poor-condition share of 8.8% is above the 4.6% statewide average. Poor-condition bridges carry about 8,273 daily vehicle crossings.

182Total Bridges

16Poor (8.8%)

97Fair (53.3%)

4Scour-Critical

Quote-Ready Local Facts

8.8%of county bridges are in poor condition, compared with 4.6% statewide and 6.7% nationally.

8,273daily vehicle crossings are on poor-condition bridges in the county.

4bridges are rated scour-critical, or 2.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Logan County a Bridge Condition Exposure Score of 75/100 (C). The county has 182 bridges in the National Bridge Inventory, including 16 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 8,273 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	8.8%	17.6
Poor-condition traffic exposure	25	3.6% of measured traffic	2.7
Scour-critical bridge share	20	2.2%	4.4
Average age vs national baseline	10	42 years vs 48 nationally	0.0
Traffic-data completeness	5	229,413 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	8.8%
State Poor-Condition Share	4.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.2%
Average Bridge Age	42 years
Poor-Condition Traffic Exposure	8,273 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI 76 Ml Ebnd over Twenty Two Slough — 5,500 vehicles/day Oldest Listed BridgeCounty Road 52 over Harmony No. 2 Canal — built in 1920 All County BridgesBrowse every bridge record in Logan County.

Top Bridges to Watch in Logan County

Bridge	Reason	Condition	Daily Traffic	Year Built
I 76 Ml Ebnd over Twenty Two Slough	Poor condition + traffic exposure	Poor	5,500	1964
US 6 Ml Ebnd over Sterling Canal No 1	Poor condition + traffic exposure	Poor	2,150	1941
County Road 71 over Spring Canyon Creek	Poor condition + traffic exposure	Poor	126	1940
CR 30.7 Vansway DR over Sterling No 1 Ditch	Poor condition + traffic exposure	Poor	104	1960
County Road 26 over N. Sterling Inlet Canal	Poor condition + traffic exposure	Poor	73	1940
County Road 91 over Trib.n.fork Frenchman Ck	Poor condition + traffic exposure	Poor	65	1940
County Road 93 over South Platte River	Poor condition + traffic exposure	Poor	62	1984
County Road 50 over N. Sterling Outlet Canal	Poor condition + traffic exposure	Poor	47	1982
County Road 66 over Duck Creek	Poor condition + traffic exposure	Poor	44	1993
County Road 48 over N. Sterling Outlet Canal	Poor condition + traffic exposure	Poor	43	1985

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.