US Bridges

City St. 8 & Half over Lake Fork Gunnison River

Fair

Hinsdale County, Colorado · In Lake City · Structure no. LKE08.50-00.03A

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
980
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

City St. 8 & Half over Lake Fork Gunnison River is a prestressed concrete tee beam carrying City St. 8 & Half 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 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 980 vehicles a day, roughly 2% of them trucks, projected to reach 1,186 by 2042. The structure is 74 ft (22.7 m) long and 37 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCity St. 8 & Half
CrossesLake Fork Gunnison River
LocationIn Lake City
RouteCity Street 0
Coordinates38.03474, -107.3098
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.9 US tons
Inventory rating41.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length74 ft (22.7 m)
Longest span70 ft (21.2 m)
Deck width37 ft (11.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic980 (2022)
Projected traffic1,186 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 City St. 8 & Half over Lake Fork Gunnison River built?

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

What condition is City St. 8 & Half 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 City St. 8 & Half over Lake Fork Gunnison River carry?

About 980 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is City St. 8 & Half over Lake Fork Gunnison River?

The structure is 74 ft (22.7 m) long with a longest span of 70 ft (21.2 m) and a deck 37 ft wide.

Who owns City St. 8 & Half over Lake Fork Gunnison River?

It is owned by the City or Municipal Highway Agency.