US Bridges

County Road 63.1 over BNSF RR

PoorPosted for load

Las Animas County, Colorado · Just W of I25 · Structure no. LA631-30-27-131

Built
1929
96 years old
Condition
Poor
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
155 ft
3 main spans
Daily traffic
713
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 63.1 over BNSF RR is a concrete continuous tee beam carrying County Road 63.1 over BNSF RR in Las Animas County, Colorado. It was built in 1929, so it is 96 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 713 vehicles a day, roughly 2% of them trucks, projected to reach 876 by 2042. The structure is 155 ft (47.1 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 63.1
CrossesBNSF RR
LocationJust W of I25
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.38263, -104.60692
Functional classRural Major Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating21.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length155 ft (47.1 m)
Longest span57 ft (17.4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic713 (2022)
Projected traffic876 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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 statusEligible 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 63.1 over BNSF RR built?

It was built in 1929, making it 96 years old in 2025.

What condition is County Road 63.1 over BNSF RR 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 Road 63.1 over BNSF RR carry?

About 713 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 63.1 over BNSF RR?

The structure is 155 ft (47.1 m) long with a longest span of 57 ft (17.4 m) and a deck 28 ft wide.

Who owns County Road 63.1 over BNSF RR?

It is owned by the County Highway Agency.