US Bridges

County Road 30 over Comanche Creek

Fair

Arapahoe County, Colorado · .8 Mile W of CR 157 · Structure no. ARA 30-38.2A

Built
1987
38 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
252 ft
5 main spans
Daily traffic
392
2021 count
Owner
County
County Highway Agency

About this bridge

County Road 30 over Comanche Creek is a prestressed concrete tee beam carrying County Road 30 over Comanche Creek in Arapahoe County, Colorado. It was built in 1987, so it is 38 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 392 vehicles a day, roughly 5% of them trucks, projected to reach 479 by 2041. The structure is 252 ft (76.7 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 30
CrossesComanche Creek
Location.8 Mile W of CR 157
RouteCounty Highway 0
CountyArapahoe County
StateColorado
Coordinates39.63706, -104.33885
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.4 US tons
Inventory rating32.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length252 ft (76.7 m)
Longest span47 ft (14.3 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic392 (2021)
Projected traffic479 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 County Road 30 over Comanche Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is County Road 30 over Comanche Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does County Road 30 over Comanche Creek carry?

About 392 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is County Road 30 over Comanche Creek?

The structure is 252 ft (76.7 m) long with a longest span of 47 ft (14.3 m) and a deck 34 ft wide.

Who owns County Road 30 over Comanche Creek?

It is owned by the County Highway Agency.