US Bridges

US 97 over Lateral No. 1

Good

Yakima County, Washington · 10.1 N JCT SR 22 · Structure no. 0005916A0000000

Built
1959
66 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
100
2007 count
Owner
State
State Highway Agency

About this bridge

US 97 over Lateral No. 1 is a concrete slab carrying US 97 over Lateral No. 1 in Yakima County, Washington. It was built in 1959, so it is 66 years old, older 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 120 by 2036. The structure is 28 ft (8.5 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS 97
CrossesLateral No. 1
Location10.1 N JCT SR 22
RouteU.S. Route 97
CountyYakima County
StateWashington
Coordinates46.47975, -120.44889
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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; action required to protect exposed foundations
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 rating54 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2007)
Projected traffic120 by 2036
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$479,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 97 over Lateral No. 1 built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 97 over Lateral No. 1 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 US 97 over Lateral No. 1 carry?

About 100 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is US 97 over Lateral No. 1?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 30 ft wide.

Who owns US 97 over Lateral No. 1?

It is owned by the State Highway Agency.