Douglas County Bridge Report Card

Douglas County scores 93 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A93 / 100

Local infrastructure snapshot

Douglas County, Colorado

Douglas County has 264 bridges in the National Bridge Inventory, with 6 rated poor and 2 rated scour-critical. Its poor-condition share of 2.3% is at or below the 4.6% statewide average. Poor-condition bridges carry about 37,353 daily vehicle crossings.

264Total Bridges

6Poor (2.3%)

119Fair (45.1%)

2Scour-Critical

Quote-Ready Local Facts

2.3%of county bridges are in poor condition, compared with 4.6% statewide and 6.7% nationally.

37,353daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 0.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Douglas County a Bridge Condition Exposure Score of 93/100 (A). The county has 264 bridges in the National Bridge Inventory, including 6 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 37,353 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	2.3%	4.5
Poor-condition traffic exposure	25	0.8% of measured traffic	0.6
Scour-critical bridge share	20	0.8%	1.5
Average age vs national baseline	10	29 years vs 48 nationally	0.0
Traffic-data completeness	5	4,816,367 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	2.3%
State Poor-Condition Share	4.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.8%
Average Bridge Age	29 years
Poor-Condition Traffic Exposure	37,353 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgePlum Creek Parkway over Sellars Gulch — 14,950 vehicles/day Oldest Listed BridgeSH 105 Ml over Draw — built in 1938 All County BridgesBrowse every bridge record in Douglas County.

Top Bridges to Watch in Douglas County

Bridge	Reason	Condition	Daily Traffic	Year Built
SH 105 Ml over Draw	Poor condition + traffic exposure	Poor	2,600	1938
Plum Creek Parkway over Sellars Gulch	Poor condition + traffic exposure	Poor	14,950	1987
Happy Canyon Road over I 25 Ml	Poor condition + traffic exposure	Poor	6,760	1965
Rampart Range Road over Little Willow Creek	Poor condition + traffic exposure	Poor	5,248	1985
SH 83 Ml over West Cherry Creek	Poor condition + traffic exposure	Poor	4,400	1968
Cr107 (liggett Rd) over I 25 Ml	Poor condition + traffic exposure	Poor	3,395	1964
Jackson Creek Road over West Plum Creek	Scour-critical foundation rating	Fair	644	1951
I 25 Ml over Happy Canyon Creek	High traffic	Fair	116,000	1999
I 25 Ml over Clydesdale LN	High traffic	Fair	116,000	1999
I 25 Ml over Ridgegate PKWY	High traffic	Fair	116,000	2008

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.