US Bridges

County Road 4/105 over N. Fork-Frying Pan River

Fair

Pitkin County, Colorado · 5 MI E of Reudi Reservoir · Structure no. PIT-004-26.3A

Built
1996
29 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
121
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 4/105 over N. Fork-Frying Pan River is a prestressed concrete box beam or girders - multiple carrying County Road 4/105 over N. Fork-Frying Pan River in Pitkin County, Colorado. It was built in 1996, so it is 29 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 121 vehicles a day, projected to reach 133 by 2042. The structure is 50 ft (15.3 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCounty Road 4/105
CrossesN. Fork-Frying Pan River
Location5 MI E of Reudi Reservoir
RouteCounty Highway 0
CountyPitkin County
StateColorado
Coordinates39.343, -106.66855
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating66.8 US tons
Inventory rating37.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length50 ft (15.3 m)
Longest span47 ft (14.3 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic121 (2022)
Projected traffic133 by 2042
Trucks0%
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 4/105 over N. Fork-Frying Pan River built?

It was built in 1996, making it 29 years old in 2025.

What condition is County Road 4/105 over N. Fork-Frying Pan 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 May 2024.

How much traffic does County Road 4/105 over N. Fork-Frying Pan River carry?

About 121 vehicles per day (2022 count).

How long is County Road 4/105 over N. Fork-Frying Pan River?

The structure is 50 ft (15.3 m) long with a longest span of 47 ft (14.3 m) and a deck 32 ft wide.

Who owns County Road 4/105 over N. Fork-Frying Pan River?

It is owned by the County Highway Agency.