US Bridges

County Road 58A over West Plum Creek Tributar

Good

Douglas County, Colorado · .2 MI SW of CO RD 105 · Structure no. DOU58A-00.56A

Built
1998
27 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
42 ft
2 main spans
Daily traffic
61
2021 count
Owner
County
County Highway Agency

About this bridge

County Road 58A over West Plum Creek Tributar is a concrete culvert carrying County Road 58A over West Plum Creek Tributar in Douglas County, Colorado. It was built in 1998, so it is 27 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 61 vehicles a day, projected to reach 82 by 2041. The structure is 42 ft (12.8 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCounty Road 58A
CrossesWest Plum Creek Tributar
Location.2 MI SW of CO RD 105
RouteCounty Highway 0
CountyDouglas County
StateColorado
Coordinates39.25953, -104.95154
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating91.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length42 ft (12.8 m)
Longest span21 ft (6.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2021)
Projected traffic82 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 County Road 58A over West Plum Creek Tributar built?

It was built in 1998, making it 27 years old in 2025.

What condition is County Road 58A over West Plum Creek Tributar in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does County Road 58A over West Plum Creek Tributar carry?

About 61 vehicles per day (2021 count).

How long is County Road 58A over West Plum Creek Tributar?

The structure is 42 ft (12.8 m) long with a longest span of 21 ft (6.3 m) and a deck 35 ft wide.

Who owns County Road 58A over West Plum Creek Tributar?

It is owned by the County Highway Agency.