US Bridges

County Road 34 over I 70 Ml Kyle RR

Fair

Lincoln County, Colorado · 11 MI E of JCT SH 71 · Structure no. G-23-AF

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
419 ft
3 main spans
Daily traffic
3
2024 count
Owner
State
State Highway Agency

About this bridge

County Road 34 over I 70 Ml Kyle RR is a steel continuous stringer/multi-beam or girder carrying County Road 34 over I 70 Ml Kyle RR 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 5 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 3 vehicles a day, projected to reach 4 by 2044. The structure is 419 ft (127.7 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 34
CrossesI 70 Ml Kyle RR
Location11 MI E of JCT SH 71
RouteCounty Highway 0
CountyLincoln County
StateColorado
Coordinates39.27778, -103.43485
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
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 rating51.9 US tons
Inventory rating31.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length419 ft (127.7 m)
Longest span165 ft (50.3 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3 (2024)
Projected traffic4 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.7 mi (6 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 34 over I 70 Ml Kyle RR built?

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

What condition is County Road 34 over I 70 Ml Kyle RR 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 34 over I 70 Ml Kyle RR carry?

About 3 vehicles per day (2024 count).

How long is County Road 34 over I 70 Ml Kyle RR?

The structure is 419 ft (127.7 m) long with a longest span of 165 ft (50.3 m) and a deck 36 ft wide.

Who owns County Road 34 over I 70 Ml Kyle RR?

It is owned by the State Highway Agency.