US Bridges

Pinto Ridge Road over Main Canal

Good

Grant County, Washington · Pinto Ridge .5 N of SR 28 · Structure no. 085909000000000

Built
1992
33 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
134 ft
1 main span
Daily traffic
530
2019 count
Owner
County
County Highway Agency

About this bridge

Pinto Ridge Road over Main Canal is a prestressed concrete tee beam carrying Pinto Ridge Road over Main Canal in Grant County, Washington. It was built in 1992, so it is 33 years old, younger than the Washington average of 49.8 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 530 vehicles a day, roughly 28% of them trucks, projected to reach 1,085 by 2043. The structure is 134 ft (40.8 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesPinto Ridge Road
CrossesMain Canal
LocationPinto Ridge .5 N of SR 28
RouteCounty Highway 95025
Coordinates47.43182, -119.31979
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating27.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length134 ft (40.8 m)
Longest span133 ft (40.5 m)
Deck width35 ft (10.7 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic530 (2019)
Projected traffic1,085 by 2043
Trucks28%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pinto Ridge Road over Main Canal built?

It was built in 1992, making it 33 years old in 2025.

What condition is Pinto Ridge Road over Main 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 November 2023.

How much traffic does Pinto Ridge Road over Main Canal carry?

About 530 vehicles per day (2019 count), of which roughly 28% are trucks.

How long is Pinto Ridge Road over Main Canal?

The structure is 134 ft (40.8 m) long with a longest span of 133 ft (40.5 m) and a deck 35 ft wide.

Who owns Pinto Ridge Road over Main Canal?

It is owned by the County Highway Agency.