US Bridges

Last Chance RD over Walla Walla River

Good

Walla Walla County, Washington · 00.72 N Frog Hollow · Structure no. 086301000000000

Built
1997
28 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
194 ft
2 main spans
Daily traffic
850
2021 count
Owner
County
County Highway Agency

About this bridge

Last Chance RD over Walla Walla River is a prestressed concrete continuous tee beam carrying Last Chance RD over Walla Walla River in Walla Walla County, Washington. It was built in 1997, so it is 28 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 850 vehicles a day, roughly 5% of them trucks, projected to reach 1,530 by 2043. The structure is 194 ft (59 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLast Chance RD
CrossesWalla Walla River
Location00.72 N Frog Hollow
RouteCounty Highway 21930
Coordinates46.03075, -118.45119
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length194 ft (59 m)
Longest span97 ft (29.6 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2021)
Projected traffic1,530 by 2043
Trucks5%
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

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$7.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Last Chance RD over Walla Walla River built?

It was built in 1997, making it 28 years old in 2025.

What condition is Last Chance RD over Walla Walla River 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 September 2023.

How much traffic does Last Chance RD over Walla Walla River carry?

About 850 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Last Chance RD over Walla Walla River?

The structure is 194 ft (59 m) long with a longest span of 97 ft (29.6 m) and a deck 35 ft wide.

Who owns Last Chance RD over Walla Walla River?

It is owned by the County Highway Agency.