US Bridges

County Road 64.6 over Plateau Creek

GoodPosted for load

Mesa County, Colorado · 1.2 MI SE Road N.5 · Structure no. MESA-64.6-NE

Built
2014
11 years old
Condition
Good
inspected January 2024
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
23
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 64.6 over Plateau Creek is a prestressed concrete slab carrying County Road 64.6 over Plateau Creek in Mesa County, Colorado. It was built in 2014, so it is 11 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. Its operating status is: posted for load restriction.

It carries about 23 vehicles a day, projected to reach 27 by 2042. The structure is 33 ft (10 m) long and 34 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesCounty Road 64.6
CrossesPlateau Creek
Location1.2 MI SE Road N.5
RouteCounty Highway 0
CountyMesa County
StateColorado
Coordinates39.21186, -107.76552
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating21.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length33 ft (10 m)
Longest span31 ft (9.4 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23 (2022)
Projected traffic27 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 64.6 over Plateau Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is County Road 64.6 over Plateau 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 January 2024.

How much traffic does County Road 64.6 over Plateau Creek carry?

About 23 vehicles per day (2022 count).

How long is County Road 64.6 over Plateau Creek?

The structure is 33 ft (10 m) long with a longest span of 31 ft (9.4 m) and a deck 34 ft wide.

Who owns County Road 64.6 over Plateau Creek?

It is owned by the County Highway Agency.