US Bridges

County Road 330 over Williams Fork River

FairPosted for load

Grand County, Colorado · Over Inlet to Reservoir · Structure no. 049033000.5020A

Built
1929
96 years old, rebuilt 1992
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel
Length
61 ft
1 main span
Daily traffic
166
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 330 over Williams Fork River is a steel truss - thru carrying County Road 330 over Williams Fork River in Grand County, Colorado. It was built in 1929 and reconstructed in 1992, so it is 96 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 166 vehicles a day, roughly 14% of them trucks, projected to reach 196 by 2042. The structure is 61 ft (18.7 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 330
CrossesWilliams Fork River
LocationOver Inlet to Reservoir
RouteCounty Highway 0
CountyGrand County
StateColorado
Coordinates39.99992, -106.17989
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.3 US tons
Inventory rating10.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length61 ft (18.7 m)
Longest span59 ft (18.1 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166 (2023)
Projected traffic196 by 2042
Trucks14%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$277,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 330 over Williams Fork River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1992.

What condition is County Road 330 over Williams Fork 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 September 2023.

How much traffic does County Road 330 over Williams Fork River carry?

About 166 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is County Road 330 over Williams Fork River?

The structure is 61 ft (18.7 m) long with a longest span of 59 ft (18.1 m) and a deck 16 ft wide.

Who owns County Road 330 over Williams Fork River?

It is owned by the County Highway Agency.