US Bridges

County Road 30 over Grand Valley Canal

Good

Mesa County, Colorado · .4 MI N of US 6 · Structure no. MESA-30-E.4A

Built
1996
29 years old
Condition
Good
inspected February 2024
Type
Slab
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
8,822
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 30 over Grand Valley Canal is a prestressed concrete slab carrying County Road 30 over Grand Valley Canal in Mesa County, Colorado. It was built in 1996, so it is 29 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 8,822 vehicles a day, roughly 7% of them trucks, projected to reach 10,321 by 2042. The structure is 48 ft (14.6 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCounty Road 30
CrossesGrand Valley Canal
Location.4 MI N of US 6
RouteCounty Highway 0
CountyMesa County
StateColorado
Coordinates39.08303, -108.49661
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating33.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span44 ft (13.3 m)
Deck width70 ft (21.4 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,822 (2022)
Projected traffic10,321 by 2042
Trucks7%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$260,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 30 over Grand Valley Canal built?

It was built in 1996, making it 29 years old in 2025.

What condition is County Road 30 over Grand Valley Canal 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 February 2024.

How much traffic does County Road 30 over Grand Valley Canal carry?

About 8,822 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is County Road 30 over Grand Valley Canal?

The structure is 48 ft (14.6 m) long with a longest span of 44 ft (13.3 m) and a deck 70 ft wide.

Who owns County Road 30 over Grand Valley Canal?

It is owned by the County Highway Agency.