US Bridges

County Road U over North Fork Sand Arroyo

Poor

Baca County, Colorado · 1 MI W of CR 10 · Structure no. BAU-9-17-39

Built
1960
65 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
81 ft
2 main spans
Daily traffic
7
2022 count
Owner
County
County Highway Agency

About this bridge

County Road U over North Fork Sand Arroyo is a steel stringer/multi-beam or girder carrying County Road U over North Fork Sand Arroyo in Baca County, Colorado. It was built in 1960, so it is 65 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: open, posting recommended but not legally implemented.

It carries about 7 vehicles a day, projected to reach 9 by 2042. The structure is 81 ft (24.7 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty Road U
CrossesNorth Fork Sand Arroyo
Location1 MI W of CR 10
RouteCounty Highway 0
Coordinates37.25027, -102.92275
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.3 US tons
Inventory rating15.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length81 ft (24.7 m)
Longest span37 ft (11.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7 (2022)
Projected traffic9 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.6 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road U over North Fork Sand Arroyo built?

It was built in 1960, making it 65 years old in 2025.

What condition is County Road U over North Fork Sand Arroyo 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 April 2024.

How much traffic does County Road U over North Fork Sand Arroyo carry?

About 7 vehicles per day (2022 count).

How long is County Road U over North Fork Sand Arroyo?

The structure is 81 ft (24.7 m) long with a longest span of 37 ft (11.4 m) and a deck 24 ft wide.

Who owns County Road U over North Fork Sand Arroyo?

It is owned by the County Highway Agency.