Arapahoe County Bridge Report Card

Arapahoe County scores 84 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B84 / 100

Local infrastructure snapshot

Arapahoe County, Colorado

Arapahoe County has 392 bridges in the National Bridge Inventory, with 21 rated poor and 7 rated scour-critical. Its poor-condition share of 5.4% is above the 4.6% statewide average. Poor-condition bridges carry about 227,137 daily vehicle crossings.

392Total Bridges

21Poor (5.4%)

267Fair (68.1%)

7Scour-Critical

Quote-Ready Local Facts

5.4%of county bridges are in poor condition, compared with 4.6% statewide and 6.7% nationally.

227,137daily vehicle crossings are on poor-condition bridges in the county.

7bridges are rated scour-critical, or 1.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Arapahoe County a Bridge Condition Exposure Score of 84/100 (B). The county has 392 bridges in the National Bridge Inventory, including 21 in poor condition and 7 rated scour-critical. Poor-condition bridges carry about 227,137 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	5.4%	10.7
Poor-condition traffic exposure	25	2.9% of measured traffic	2.1
Scour-critical bridge share	20	1.8%	3.6
Average age vs national baseline	10	41 years vs 48 nationally	0.0
Traffic-data completeness	5	7,933,305 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	5.4%
State Poor-Condition Share	4.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.8%
Average Bridge Age	41 years
Poor-Condition Traffic Exposure	227,137 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS 285 Ml over Little Dry Creek — 46,000 vehicles/day Oldest Listed BridgeBroadway over Big Dry Creek — built in 1931 All County BridgesBrowse every bridge record in Arapahoe County.

Top Bridges to Watch in Arapahoe County

Bridge	Reason	Condition	Daily Traffic	Year Built
SH 177 Ml over Little Dry Creek	Poor condition + traffic exposure	Poor	29,000	1965
US 285 Ml over Little Dry Creek	Poor condition + traffic exposure	Poor	46,000	1955
Broadway over Little Dry Creek	Poor condition + traffic exposure	Poor	31,496	1935
SH 88 Ml over Bear Creek	Poor condition + traffic exposure	Poor	21,000	1966
Alameda AVE over I 225 Ml	Poor condition + traffic exposure	Poor	20,060	1969
I 70 Ml Wbnd over US 40 Frontage RD	Poor condition + traffic exposure	Poor	10,527	1965
Orchard RD over Highline Canal	Poor condition + traffic exposure	Poor	10,077	1965
I 70 Ml Ebnd over US 40 Frontage Road	Poor condition + traffic exposure	Poor	9,839	1965
I 70 Ml Wbnd over County Road 201	Poor condition + traffic exposure	Poor	6,000	1964
I 70 Ml Ebnd over County Road 201	Poor condition + traffic exposure	Poor	6,000	1964

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.