US Bridges

Hess Road over Chandler Canal

Fair

Benton County, Washington · 00.93 E Oieh · Structure no. 083765000000000

Built
1953
72 years old, rebuilt 1969
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
1 main span
Daily traffic
130
2023 count
Owner
County
County Highway Agency

About this bridge

Hess Road over Chandler Canal is a wood or timber stringer/multi-beam or girder carrying Hess Road over Chandler Canal in Benton County, Washington. It was built in 1953 and reconstructed in 1969, so it is 72 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 130 vehicles a day, roughly 5% of them trucks, projected to reach 170 by 2038. The structure is 52 ft (15.8 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHess Road
CrossesChandler Canal
Location00.93 E Oieh
RouteCounty Highway 30100
Coordinates46.22847, -119.68709
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating25.4 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length52 ft (15.8 m)
Longest span52 ft (15.8 m)
Deck width22 ft (6.8 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2023)
Projected traffic170 by 2038
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$593,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hess Road over Chandler Canal built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1969.

What condition is Hess Road over Chandler Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does Hess Road over Chandler Canal carry?

About 130 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Hess Road over Chandler Canal?

The structure is 52 ft (15.8 m) long with a longest span of 52 ft (15.8 m) and a deck 22 ft wide.

Who owns Hess Road over Chandler Canal?

It is owned by the County Highway Agency.