US Bridges

County Road 58 over Elk River

Good

Routt County, Colorado · 0.4 MI W of CO RD 129 · Structure no. 107005800.40717

Built
1991
34 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
35
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 58 over Elk River is a prestressed concrete stringer/multi-beam or girder carrying County Road 58 over Elk River in Routt County, Colorado. It was built in 1991, so it is 34 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 35 vehicles a day, roughly 51% of them trucks, projected to reach 42 by 2042. The structure is 94 ft (28.8 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCounty Road 58
CrossesElk River
Location0.4 MI W of CO RD 129
RouteCounty Highway 0
Coordinates40.69584, -106.93316
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
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 within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment7: Better than present minimum criteria
Operating rating39.4 US tons
Inventory rating15.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length94 ft (28.8 m)
Longest span90 ft (27.4 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic42 by 2042
Trucks51%
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 58 over Elk River built?

It was built in 1991, making it 34 years old in 2025.

What condition is County Road 58 over Elk River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does County Road 58 over Elk River carry?

About 35 vehicles per day (2023 count), of which roughly 51% are trucks.

How long is County Road 58 over Elk River?

The structure is 94 ft (28.8 m) long with a longest span of 90 ft (27.4 m) and a deck 25 ft wide.

Who owns County Road 58 over Elk River?

It is owned by the County Highway Agency.