US Bridges

County Road Nn over Landsman Creek

Fair

Kit Carson County, Colorado · 1.7 Miles NW of RD 49 · Structure no. KITC-NN-2.90-03

Built
1970
55 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
3 main spans
Daily traffic
17
2022 count
Owner
County
County Highway Agency

About this bridge

County Road Nn over Landsman Creek is a steel stringer/multi-beam or girder carrying County Road Nn over Landsman Creek in Kit Carson County, Colorado. It was built in 1970, so it is 55 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 17 vehicles a day, projected to reach 20 by 2042. The structure is 120 ft (36.6 m) long and 20 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty Road Nn
CrossesLandsman Creek
Location1.7 Miles NW of RD 49
RouteCounty Highway 0
CountyKit Carson County
StateColorado
Coordinates39.54094, -102.279
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 statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating31.4 US tons
Inventory rating18.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans3
Design loadUnknown
Structure length120 ft (36.6 m)
Longest span39 ft (11.9 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (2022)
Projected traffic20 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road Nn over Landsman Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is County Road Nn over Landsman Creek 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 Nn over Landsman Creek carry?

About 17 vehicles per day (2022 count).

How long is County Road Nn over Landsman Creek?

The structure is 120 ft (36.6 m) long with a longest span of 39 ft (11.9 m) and a deck 20 ft wide.

Who owns County Road Nn over Landsman Creek?

It is owned by the County Highway Agency.