US Bridges

SR 260 over Irrigation Canal

Good

Franklin County, Washington · 3.1 E JCT SR 17 · Structure no. 000000MW0000000

Built
1956
69 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
1,946
2023 count
Owner
State
State Highway Agency

About this bridge

SR 260 over Irrigation Canal is a concrete slab carrying SR 260 over Irrigation Canal in Franklin County, Washington. It was built in 1956, so it is 69 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 1,946 vehicles a day, roughly 15% of them trucks, projected to reach 2,337 by 2039. The structure is 32 ft (9.8 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR 260
CrossesIrrigation Canal
Location3.1 E JCT SR 17
RouteState Highway 260
Coordinates46.66364, -118.94203
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 rating45 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length32 ft (9.8 m)
Longest span30 ft (9 m)
Deck width39 ft (12 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,946 (2023)
Projected traffic2,337 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$486,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 260 over Irrigation Canal built?

It was built in 1956, making it 69 years old in 2025.

What condition is SR 260 over Irrigation 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 SR 260 over Irrigation Canal carry?

About 1,946 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SR 260 over Irrigation Canal?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9 m) and a deck 39 ft wide.

Who owns SR 260 over Irrigation Canal?

It is owned by the State Highway Agency.