US Bridges

County Road M over Trib. of E. Carrizo Crk

Fair

Baca County, Colorado · 4.2 MI E of CR 0 · Structure no. BAL-4.2-10-48

Built
1935
90 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Masonry
Length
45 ft
3 main spans
Daily traffic
19
2022 count
Owner
County
County Highway Agency

About this bridge

County Road M over Trib. of E. Carrizo Crk is a masonry arch - deck carrying County Road M over Trib. of E. Carrizo Crk 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 5 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 19 vehicles a day, projected to reach 25 by 2042. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road M
CrossesTrib. of E. Carrizo Crk
Location4.2 MI E of CR 0
RouteCounty Highway 0
CountyBaca County
StateColorado
Coordinates37.14864, -103.00796
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans3
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span13 ft (3.9 m)
Deck width28 ft (8.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19 (2022)
Projected traffic25 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 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 M over Trib. of E. Carrizo Crk built?

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

What condition is County Road M over Trib. of E. Carrizo Crk 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 M over Trib. of E. Carrizo Crk carry?

About 19 vehicles per day (2022 count).

How long is County Road M over Trib. of E. Carrizo Crk?

The structure is 45 ft (13.7 m) long with a longest span of 13 ft (3.9 m) and a deck 28 ft wide.

Who owns County Road M over Trib. of E. Carrizo Crk?

It is owned by the County Highway Agency.