US Bridges

County Road 74 over Elkhead Creek

Good

Routt County, Colorado · 2 MI E of County RD 76 · Structure no. 107007402.00964

Built
1997
28 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
1 main span
Daily traffic
5
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 74 over Elkhead Creek is a steel stringer/multi-beam or girder carrying County Road 74 over Elkhead Creek in Routt County, Colorado. It was built in 1997, so it is 28 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5 vehicles a day, roughly 23% of them trucks, projected to reach 6 by 2042. The structure is 48 ft (14.7 m) long and 15 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCounty Road 74
CrossesElkhead Creek
Location2 MI E of County RD 76
RouteCounty Highway 0
CountyRoutt County
StateColorado
Coordinates40.60251, -107.28579
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length48 ft (14.7 m)
Longest span46 ft (14 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2023)
Projected traffic6 by 2042
Trucks23%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 74 over Elkhead Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is County Road 74 over Elkhead Creek 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 74 over Elkhead Creek carry?

About 5 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is County Road 74 over Elkhead Creek?

The structure is 48 ft (14.7 m) long with a longest span of 46 ft (14 m) and a deck 15 ft wide.

Who owns County Road 74 over Elkhead Creek?

It is owned by the County Highway Agency.