US Bridges

County Road 29 over N. Fk. Smoky Hill River

FairPosted for load

Kit Carson County, Colorado · 0.5 Miles South of Road C · Structure no. KITC-29-1.50-01

Built
1930
95 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
7
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 29 over N. Fk. Smoky Hill River is a steel stringer/multi-beam or girder carrying County Road 29 over N. Fk. Smoky Hill River in Kit Carson County, Colorado. It was built in 1930, so it is 95 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. Its operating status is: posted for load restriction.

It carries about 7 vehicles a day, projected to reach 8 by 2042. The structure is 40 ft (12.3 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCounty Road 29
CrossesN. Fk. Smoky Hill River
Location0.5 Miles South of Road C
RouteCounty Highway 0
CountyKit Carson County
StateColorado
Coordinates39.062, -102.63214
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating11.8 US tons
Inventory rating7.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length40 ft (12.3 m)
Longest span39 ft (11.8 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 traffic8 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$890,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 29 over N. Fk. Smoky Hill River built?

It was built in 1930, making it 95 years old in 2025.

What condition is County Road 29 over N. Fk. Smoky Hill 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 December 2023.

How much traffic does County Road 29 over N. Fk. Smoky Hill River carry?

About 7 vehicles per day (2022 count).

How long is County Road 29 over N. Fk. Smoky Hill River?

The structure is 40 ft (12.3 m) long with a longest span of 39 ft (11.8 m) and a deck 24 ft wide.

Who owns County Road 29 over N. Fk. Smoky Hill River?

It is owned by the County Highway Agency.