US Bridges

County Road 30 over Lake Fork Gunnison River

Fair

Hinsdale County, Colorado · 7.6 MI S of Lake City · Structure no. HIN03-07.06A

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
436
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 30 over Lake Fork Gunnison River is a steel stringer/multi-beam or girder carrying County Road 30 over Lake Fork Gunnison River in Hinsdale County, Colorado. It was built in 1986, so it is 39 years old, younger 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 436 vehicles a day, roughly 2% of them trucks, projected to reach 528 by 2042. The structure is 47 ft (14.4 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCounty Road 30
CrossesLake Fork Gunnison River
Location7.6 MI S of Lake City
RouteCounty Highway 0
CountyHinsdale County
StateColorado
Coordinates37.91947, -107.3326
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
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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.9 US tons
Inventory rating22.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length47 ft (14.4 m)
Longest span44 ft (13.5 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic436 (2022)
Projected traffic528 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 30 over Lake Fork Gunnison River built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Road 30 over Lake Fork Gunnison River 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 October 2024.

How much traffic does County Road 30 over Lake Fork Gunnison River carry?

About 436 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 30 over Lake Fork Gunnison River?

The structure is 47 ft (14.4 m) long with a longest span of 44 ft (13.5 m) and a deck 29 ft wide.

Who owns County Road 30 over Lake Fork Gunnison River?

It is owned by the County Highway Agency.