US Bridges

County Road 36 over I 70 Ml

Fair

Lincoln County, Colorado · Bovina Interchange · Structure no. G-23-AM

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
278 ft
2 main spans
Daily traffic
85
2024 count
Owner
State
State Highway Agency

About this bridge

County Road 36 over I 70 Ml is a steel continuous stringer/multi-beam or girder carrying County Road 36 over I 70 Ml in Lincoln 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 85 vehicles a day, projected to reach 108 by 2044. The structure is 278 ft (84.6 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty Road 36
CrossesI 70 Ml
LocationBovina Interchange
RouteCounty Highway 0
CountyLincoln County
StateColorado
Coordinates39.2785, -103.39739
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 rating44.6 US tons
Inventory rating26.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length278 ft (84.6 m)
Longest span140 ft (42.7 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85 (2024)
Projected traffic108 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 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 36 over I 70 Ml built?

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

What condition is County Road 36 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 36 over I 70 Ml carry?

About 85 vehicles per day (2024 count).

How long is County Road 36 over I 70 Ml?

The structure is 278 ft (84.6 m) long with a longest span of 140 ft (42.7 m) and a deck 36 ft wide.

Who owns County Road 36 over I 70 Ml?

It is owned by the State Highway Agency.