US Bridges

County RD 85.5 over Bill Creek

Fair

Las Animas County, Colorado · 1 MI S of CR 22 · Structure no. LA85.5-43-10-65

Built
1966
59 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 85.5 over Bill Creek is a steel stringer/multi-beam or girder carrying County RD 85.5 over Bill Creek in Las Animas County, Colorado. It was built in 1966, so it is 59 years old, older 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 5 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 24 vehicles a day, projected to reach 30 by 2042. The structure is 30 ft (9.1 m) long and 15 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesCounty RD 85.5
CrossesBill Creek
Location1 MI S of CR 22
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.13764, -104.36907
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckAluminum
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span25 ft (7.5 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic30 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 RD 85.5 over Bill Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is County RD 85.5 over Bill 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 June 2023.

How much traffic does County RD 85.5 over Bill Creek carry?

About 24 vehicles per day (2022 count).

How long is County RD 85.5 over Bill Creek?

The structure is 30 ft (9.1 m) long with a longest span of 25 ft (7.5 m) and a deck 15 ft wide.

Who owns County RD 85.5 over Bill Creek?

It is owned by the County Highway Agency.