US Bridges

County Road 100 over Roaring Fork River

Fair

Garfield County, Colorado · 0.6 MI So of ST HWY 82 · Structure no. GAR106-05.71

Built
1976
49 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
169 ft
3 main spans
Daily traffic
5,353
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 100 over Roaring Fork River is a prestressed concrete tee beam carrying County Road 100 over Roaring Fork River in Garfield County, Colorado. It was built in 1976, so it is 49 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.

It carries about 5,353 vehicles a day, roughly 17% of them trucks, projected to reach 6,798 by 2042. The structure is 169 ft (51.6 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCounty Road 100
CrossesRoaring Fork River
Location0.6 MI So of ST HWY 82
RouteCounty Highway 0
CountyGarfield County
StateColorado
Coordinates39.3996, -107.15419
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length169 ft (51.6 m)
Longest span69 ft (21.1 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,353 (2023)
Projected traffic6,798 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$918,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 100 over Roaring Fork River built?

It was built in 1976, making it 49 years old in 2025.

What condition is County Road 100 over Roaring 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 100 over Roaring Fork River carry?

About 5,353 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is County Road 100 over Roaring Fork River?

The structure is 169 ft (51.6 m) long with a longest span of 69 ft (21.1 m) and a deck 30 ft wide.

Who owns County Road 100 over Roaring Fork River?

It is owned by the County Highway Agency.