US Bridges

Thorfinnson Road over El Poso Creek

Fair

Costilla County, Colorado · .1 MI S of Malcom RD · Structure no. CSTHOR-S0.3-MAL

Built
2012
13 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
4
2022 count
Owner
County
County Highway Agency

About this bridge

Thorfinnson Road over El Poso Creek is a steel stringer/multi-beam or girder carrying Thorfinnson Road over El Poso Creek in Costilla County, Colorado. It was built in 2012, so it is 13 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 4 vehicles a day, projected to reach 4 by 2042. The structure is 30 ft (9 m) long and 18 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesThorfinnson Road
CrossesEl Poso Creek
Location.1 MI S of Malcom RD
RouteCounty Highway 0
CountyCostilla County
StateColorado
Coordinates37.22701, -105.27333
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.4 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9 m)
Longest span25 ft (7.6 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4 (2022)
Projected traffic4 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 Thorfinnson Road over El Poso Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Thorfinnson Road over El Poso 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 September 2024.

How much traffic does Thorfinnson Road over El Poso Creek carry?

About 4 vehicles per day (2022 count).

How long is Thorfinnson Road over El Poso Creek?

The structure is 30 ft (9 m) long with a longest span of 25 ft (7.6 m) and a deck 18 ft wide.

Who owns Thorfinnson Road over El Poso Creek?

It is owned by the County Highway Agency.