US Bridges

Mcdonald Rd. over Wip Canal

Good

Yakima County, Washington · .37 W of Harrah Drain RD · Structure no. 087403000000000

Built
2006
19 years old
Condition
Good
inspected February 2023
Type
Slab
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
108
2023 count
Owner
County
County Highway Agency

About this bridge

Mcdonald Rd. over Wip Canal is a prestressed concrete slab carrying Mcdonald Rd. over Wip Canal in Yakima County, Washington. It was built in 2006, so it is 19 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 108 vehicles a day, roughly 5% of them trucks, projected to reach 119 by 2043. The structure is 54 ft (16.5 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMcdonald Rd.
CrossesWip Canal
Location.37 W of Harrah Drain RD
RouteCounty Highway 50420
Coordinates46.39, -120.57167
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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating32.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length54 ft (16.5 m)
Longest span53 ft (16.2 m)
Deck width34 ft (10.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108 (2023)
Projected traffic119 by 2043
Trucks5%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcdonald Rd. over Wip Canal built?

It was built in 2006, making it 19 years old in 2025.

What condition is Mcdonald Rd. over Wip 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 2023.

How much traffic does Mcdonald Rd. over Wip Canal carry?

About 108 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Mcdonald Rd. over Wip Canal?

The structure is 54 ft (16.5 m) long with a longest span of 53 ft (16.2 m) and a deck 34 ft wide.

Who owns Mcdonald Rd. over Wip Canal?

It is owned by the County Highway Agency.