US Bridges

SH 139 Ml over I 70 Ml

Fair

Mesa County, Colorado · 13.5 MI E Utah - Loma Int · Structure no. H-01-AA

Built
1970
55 years old, rebuilt 1973
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
242 ft
2 main spans
Daily traffic
1,700
2020 count
Owner
State
State Highway Agency

About this bridge

SH 139 Ml over I 70 Ml is a steel continuous stringer/multi-beam or girder carrying SH 139 Ml over I 70 Ml in Mesa County, Colorado. It was built in 1970 and reconstructed in 1973, 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 1,700 vehicles a day, roughly 5% of them trucks, projected to reach 2,278 by 2040. The structure is 242 ft (73.8 m) long and 47 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSH 139 Ml
CrossesI 70 Ml
Location13.5 MI E Utah - Loma Int
RouteState Highway 139A
Coordinates39.17779, -108.8133
Functional classRural Minor Arterial

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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating21.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length242 ft (73.8 m)
Longest span119 ft (36.3 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2020)
Projected traffic2,278 by 2040
Trucks5%
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$5.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 139 Ml over I 70 Ml built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1973.

What condition is SH 139 Ml 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 July 2024.

How much traffic does SH 139 Ml over I 70 Ml carry?

About 1,700 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is SH 139 Ml over I 70 Ml?

The structure is 242 ft (73.8 m) long with a longest span of 119 ft (36.3 m) and a deck 47 ft wide.

Who owns SH 139 Ml over I 70 Ml?

It is owned by the State Highway Agency.