US Bridges

County Road 15 over Culebra Eastdale Canal

Fair

Costilla County, Colorado · Just N of CR P.7 and 14.6 · Structure no. CSNACA-S1.5142A

Built
1990
35 years old
Condition
Fair
inspected March 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
41
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 15 over Culebra Eastdale Canal is a steel stringer/multi-beam or girder carrying County Road 15 over Culebra Eastdale Canal in Costilla County, Colorado. It was built in 1990, so it is 35 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 41 vehicles a day, projected to reach 46 by 2042. The structure is 53 ft (16.1 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 15
CrossesCulebra Eastdale Canal
LocationJust N of CR P.7 and 14.6
RouteCounty Highway 0
CountyCostilla County
StateColorado
Coordinates37.19417, -105.50894
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating67.1 US tons
Inventory rating40.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length53 ft (16.1 m)
Longest span48 ft (14.5 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2022)
Projected traffic46 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 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 15 over Culebra Eastdale Canal built?

It was built in 1990, making it 35 years old in 2025.

What condition is County Road 15 over Culebra Eastdale Canal 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 March 2025.

How much traffic does County Road 15 over Culebra Eastdale Canal carry?

About 41 vehicles per day (2022 count).

How long is County Road 15 over Culebra Eastdale Canal?

The structure is 53 ft (16.1 m) long with a longest span of 48 ft (14.5 m) and a deck 27 ft wide.

Who owns County Road 15 over Culebra Eastdale Canal?

It is owned by the County Highway Agency.