US Bridges

Rampart Range Road over Little Willow Creek

Poor

Douglas County, Colorado · 1.3 MI S of Waterton RD · Structure no. DOU005-04.32

Built
1985
40 years old
Condition
Poor
inspected January 2025
Type
Culvert
Steel
Length
33 ft
2 main spans
Daily traffic
5,248
2022 count
Owner
County
County Highway Agency

About this bridge

Rampart Range Road over Little Willow Creek is a steel culvert carrying Rampart Range Road over Little Willow Creek in Douglas County, Colorado. It was built in 1985, so it is 40 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,248 vehicles a day, roughly 4% of them trucks, projected to reach 7,033 by 2042. The structure is 33 ft (10.1 m) long and 151 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRampart Range Road
CrossesLittle Willow Creek
Location1.3 MI S of Waterton RD
RouteCounty Highway 0
Coordinates39.46819, -105.07321
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length33 ft (10.1 m)
Longest span15 ft (4.5 m)
Deck width151 ft (46 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,248 (2022)
Projected traffic7,033 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rampart Range Road over Little Willow Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Rampart Range Road over Little Willow Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.

How much traffic does Rampart Range Road over Little Willow Creek carry?

About 5,248 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Rampart Range Road over Little Willow Creek?

The structure is 33 ft (10.1 m) long with a longest span of 15 ft (4.5 m) and a deck 151 ft wide.

Who owns Rampart Range Road over Little Willow Creek?

It is owned by the County Highway Agency.