US Bridges

SH 6 Frontage RD over I 70 Ml

Fair

Garfield County, Colorado · 3.6 MI E of Parachute · Structure no. G-05-J

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
448 ft
3 main spans
Daily traffic
671
2023 count
Owner
State
State Highway Agency

About this bridge

SH 6 Frontage RD over I 70 Ml is a steel continuous stringer/multi-beam or girder carrying SH 6 Frontage RD over I 70 Ml in Garfield County, Colorado. It was built in 1981, so it is 44 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 671 vehicles a day, roughly 12% of them trucks, projected to reach 852 by 2043. The structure is 448 ft (136.7 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 6 Frontage RD
CrossesI 70 Ml
Location3.6 MI E of Parachute
RouteU.S. Route 6M
Coordinates39.47674, -107.99299
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length448 ft (136.7 m)
Longest span160 ft (48.8 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic671 (2023)
Projected traffic852 by 2043
Trucks12%
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 SH 6 Frontage RD over I 70 Ml built?

It was built in 1981, making it 44 years old in 2025.

What condition is SH 6 Frontage RD 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 March 2024.

How much traffic does SH 6 Frontage RD over I 70 Ml carry?

About 671 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is SH 6 Frontage RD over I 70 Ml?

The structure is 448 ft (136.7 m) long with a longest span of 160 ft (48.8 m) and a deck 36 ft wide.

Who owns SH 6 Frontage RD over I 70 Ml?

It is owned by the State Highway Agency.