US Bridges

County Road 55 over N. Fork Cimarron River

Fair

Baca County, Colorado · 1 MI N of CR T · Structure no. BA56-56-16.9-69

Built
1935
90 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Masonry
Length
41 ft
3 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 55 over N. Fork Cimarron River is a masonry arch - deck carrying County Road 55 over N. Fork Cimarron River 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 20 vehicles a day, projected to reach 26 by 2042. The structure is 41 ft (12.6 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 55
CrossesN. Fork Cimarron River
Location1 MI N of CR T
RouteCounty Highway 0
CountyBaca County
StateColorado
Coordinates37.25173, -102.07672
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 spans3
Design loadUnknown
Structure length41 ft (12.6 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic26 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 55 over N. Fork Cimarron River built?

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

What condition is County Road 55 over N. Fork Cimarron River 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 55 over N. Fork Cimarron River carry?

About 20 vehicles per day (2022 count).

How long is County Road 55 over N. Fork Cimarron River?

The structure is 41 ft (12.6 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns County Road 55 over N. Fork Cimarron River?

It is owned by the County Highway Agency.