US Bridges

County Road over I 70 Ml

Fair

Garfield County, Colorado · 4.5MI E of Rifle · Structure no. F-06-AG

Built
1977
48 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
277 ft
2 main spans
Daily traffic
2,053
2023 count
Owner
State
State Highway Agency

About this bridge

County Road over I 70 Ml is a prestressed concrete continuous box beam or girders - single or spread carrying County Road over I 70 Ml in Garfield County, Colorado. It was built in 1977, so it is 48 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 2,053 vehicles a day, roughly 50% of them trucks, projected to reach 2,608 by 2043. The structure is 277 ft (84.3 m) long and 38 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesI 70 Ml
Location4.5MI E of Rifle
RouteCounty Highway 0
CountyGarfield County
StateColorado
Coordinates39.5316, -107.71288
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating53.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckOther
Main spans2
Design loadHS 20
Structure length277 ft (84.3 m)
Longest span137 ft (41.8 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,053 (2023)
Projected traffic2,608 by 2043
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed62.1 mi (100 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 over I 70 Ml built?

It was built in 1977, making it 48 years old in 2025.

What condition is County Road 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 September 2024.

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

About 2,053 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is County Road over I 70 Ml?

The structure is 277 ft (84.3 m) long with a longest span of 137 ft (41.8 m) and a deck 38 ft wide.

Who owns County Road over I 70 Ml?

It is owned by the State Highway Agency.