US Bridges

County Road 23 over Sand Arroyo

Fair

Baca County, Colorado · 3.5 MI S of CR W · Structure no. BA23-23-15.5-80

Built
1935
90 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Masonry
Length
33 ft
4 main spans
Daily traffic
14
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 23 over Sand Arroyo is a masonry arch - deck carrying County Road 23 over Sand Arroyo in Baca 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 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 14 vehicles a day, projected to reach 18 by 2042. The structure is 33 ft (10 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty Road 23
CrossesSand Arroyo
Location3.5 MI S of CR W
RouteCounty Highway 0
CountyBaca County
StateColorado
Coordinates37.22874, -102.66959
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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans4
Design loadUnknown
Structure length33 ft (10 m)
Longest span6 ft (1.8 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14 (2022)
Projected traffic18 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 23 over Sand Arroyo built?

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

What condition is County Road 23 over Sand Arroyo 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 April 2024.

How much traffic does County Road 23 over Sand Arroyo carry?

About 14 vehicles per day (2022 count).

How long is County Road 23 over Sand Arroyo?

The structure is 33 ft (10 m) long with a longest span of 6 ft (1.8 m) and a deck 28 ft wide.

Who owns County Road 23 over Sand Arroyo?

It is owned by the County Highway Agency.