US Bridges

SH 330 Ml over Plateau Creek

Fair

Mesa County, Colorado · 3.5 MI W of Collbran · Structure no. H-04-E

Built
1954
71 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
101 ft
2 main spans
Daily traffic
1,600
2020 count
Owner
State
State Highway Agency

About this bridge

SH 330 Ml over Plateau Creek is a steel stringer/multi-beam or girder carrying SH 330 Ml over Plateau Creek in Mesa County, Colorado. It was built in 1954, so it is 71 years old, older 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 1,600 vehicles a day, roughly 9% of them trucks, projected to reach 1,904 by 2040. The structure is 101 ft (30.8 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSH 330 Ml
CrossesPlateau Creek
Location3.5 MI W of Collbran
RouteState Highway 330A
CountyMesa County
StateColorado
Coordinates39.22428, -108.02032
Functional classRural Major 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.1 US tons
Inventory rating23.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length101 ft (30.8 m)
Longest span65 ft (19.8 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2020)
Projected traffic1,904 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$153,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 330 Ml over Plateau Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is SH 330 Ml 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 July 2024.

How much traffic does SH 330 Ml over Plateau Creek carry?

About 1,600 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SH 330 Ml over Plateau Creek?

The structure is 101 ft (30.8 m) long with a longest span of 65 ft (19.8 m) and a deck 28 ft wide.

Who owns SH 330 Ml over Plateau Creek?

It is owned by the State Highway Agency.