US Bridges

County RD 20.8 over Moore Canyon Creek

PoorPosted for load

Las Animas County, Colorado · Just W of CR 67.9 · Structure no. LA20.8-35-12-47

Built
1935
90 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 20.8 over Moore Canyon Creek is a steel stringer/multi-beam or girder carrying County RD 20.8 over Moore Canyon Creek in Las Animas County, Colorado. It was built in 1935, so it is 90 years old, older 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. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, projected to reach 37 by 2042. The structure is 28 ft (8.4 m) long and 17 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty RD 20.8
CrossesMoore Canyon Creek
LocationJust W of CR 67.9
RouteCounty Highway 0
Coordinates37.15883, -104.52348
Functional classRural Local

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating28.1 US tons
Inventory rating16.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.4 m)
Longest span23 ft (7.1 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic37 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$573,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 20.8 over Moore Canyon Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is County RD 20.8 over Moore Canyon 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 May 2023.

How much traffic does County RD 20.8 over Moore Canyon Creek carry?

About 30 vehicles per day (2022 count).

How long is County RD 20.8 over Moore Canyon Creek?

The structure is 28 ft (8.4 m) long with a longest span of 23 ft (7.1 m) and a deck 17 ft wide.

Who owns County RD 20.8 over Moore Canyon Creek?

It is owned by the County Highway Agency.