US Bridges

County Road 10 over I 70 Ml

Fair

Kit Carson County, Colorado · 5.1 MI E of Flagler · Structure no. G-25-P

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
233 ft
2 main spans
Daily traffic
5
2022 count
Owner
State
State Highway Agency

About this bridge

County Road 10 over I 70 Ml is a concrete continuous box beam or girders - multiple carrying County Road 10 over I 70 Ml in Kit Carson County, Colorado. It was built in 1975, so it is 50 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 5 vehicles a day, projected to reach 6 by 2042. The structure is 233 ft (70.9 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCounty Road 10
CrossesI 70 Ml
Location5.1 MI E of Flagler
RouteCounty Highway 0
Coordinates39.27672, -102.9691
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating34.2 US tons

Structure

MaterialConcrete Continuous
DeckOther
Main spans2
Design loadHS 20 + Mod
Structure length233 ft (70.9 m)
Longest span115 ft (35.1 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic6 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 10 over I 70 Ml built?

It was built in 1975, making it 50 years old in 2025.

What condition is County Road 10 over I 70 Ml 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 November 2023.

How much traffic does County Road 10 over I 70 Ml carry?

About 5 vehicles per day (2022 count).

How long is County Road 10 over I 70 Ml?

The structure is 233 ft (70.9 m) long with a longest span of 115 ft (35.1 m) and a deck 36 ft wide.

Who owns County Road 10 over I 70 Ml?

It is owned by the State Highway Agency.