US Bridges

County Road 60.5 over Plateau Creek

Fair

Mesa County, Colorado · Just SE of RD 330E · Structure no. MESA-60.5-P.8A

Built
1989
36 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
174
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 60.5 over Plateau Creek is a steel stringer/multi-beam or girder carrying County Road 60.5 over Plateau Creek in Mesa County, Colorado. It was built in 1989, so it is 36 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 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 174 vehicles a day, roughly 2% of them trucks, projected to reach 203 by 2042. The structure is 40 ft (12.3 m) long and 26 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesCounty Road 60.5
CrossesPlateau Creek
LocationJust SE of RD 330E
RouteCounty Highway 0
CountyMesa County
StateColorado
Coordinates39.25339, -107.92139
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span37 ft (11.4 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic174 (2022)
Projected traffic203 by 2042
Trucks2%
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 60.5 over Plateau Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is County Road 60.5 over Plateau Creek 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 January 2024.

How much traffic does County Road 60.5 over Plateau Creek carry?

About 174 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 60.5 over Plateau Creek?

The structure is 40 ft (12.3 m) long with a longest span of 37 ft (11.4 m) and a deck 26 ft wide.

Who owns County Road 60.5 over Plateau Creek?

It is owned by the County Highway Agency.