Larimer County Bridge Report Card

Larimer County scores 90 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A90 / 100

Local infrastructure snapshot

Larimer County, Colorado

Larimer County has 562 bridges in the National Bridge Inventory, with 12 rated poor and 14 rated scour-critical. Its poor-condition share of 2.1% is at or below the 4.6% statewide average. Poor-condition bridges carry about 61,130 daily vehicle crossings.

562Total Bridges

12Poor (2.1%)

275Fair (48.9%)

14Scour-Critical

Quote-Ready Local Facts

2.1%of county bridges are in poor condition, compared with 4.6% statewide and 6.7% nationally.

61,130daily vehicle crossings are on poor-condition bridges in the county.

14bridges are rated scour-critical, or 2.5% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Larimer County a Bridge Condition Exposure Score of 90/100 (A). The county has 562 bridges in the National Bridge Inventory, including 12 in poor condition and 14 rated scour-critical. Poor-condition bridges carry about 61,130 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	2.1%	4.3
Poor-condition traffic exposure	25	1.5% of measured traffic	1.1
Scour-critical bridge share	20	2.5%	5.0
Average age vs national baseline	10	38 years vs 48 nationally	0.0
Traffic-data completeness	5	4,157,813 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	2.1%
State Poor-Condition Share	4.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.5%
Average Bridge Age	38 years
Poor-Condition Traffic Exposure	61,130 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSH 392 Ml over Cache La Poudre River — 19,000 vehicles/day Oldest Listed BridgeSW 14th Street over Misc Drainage Basin — built in 1901 All County BridgesBrowse every bridge record in Larimer County.

Top Bridges to Watch in Larimer County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Road 63e over Little Beaver Creek	Poor condition + traffic exposure	Poor	86	1972
SH 392 Ml over Cache La Poudre River	Poor condition + traffic exposure	Poor	19,000	1959
US 34 Ml Wbnd over Barnes Inlet Canal	Poor condition + traffic exposure	Poor	12,500	1933
Lincoln Avenue over Dry Creek	Poor condition + traffic exposure	Poor	6,817	1948
East Vine Drive over Lake Canal	Poor condition + traffic exposure	Poor	6,025	1950
US 34 Ml over Devils Gulch	Poor condition + traffic exposure	Poor	6,000	1937
CR 17 (n Shields S over Terry Lake Inlet Canal	Poor condition + traffic exposure	Poor	4,595	1962
US 287 Ml over Dale Creek	Poor condition + traffic exposure	Poor	3,900	1958
County Road 40 over Fossil Creek Res. Inlet	Poor condition + traffic exposure	Poor	1,627	1969
Monroe Avenue over Greeley Loveland Canal	Poor condition + traffic exposure	Poor	473	1922

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.