US Bridges

Riffe Road over Pud Tailrace

Good

Lewis County, Washington · 0.5 SW Packwood · Structure no. 082937000000000

Built
1962
63 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete
Length
30 ft
1 main span
Daily traffic
6
2022 count
Owner
County
County Highway Agency

About this bridge

Riffe Road over Pud Tailrace is a concrete slab carrying Riffe Road over Pud Tailrace in Lewis County, Washington. It was built in 1962, so it is 63 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 6 vehicles a day, roughly 17% of them trucks, projected to reach 11 by 2042. The structure is 30 ft (9.1 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesRiffe Road
CrossesPud Tailrace
Location0.5 SW Packwood
RouteCounty Highway 71631
Coordinates46.60141, -121.67242
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating48 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6 (2022)
Projected traffic11 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$428,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Riffe Road over Pud Tailrace built?

It was built in 1962, making it 63 years old in 2025.

What condition is Riffe Road over Pud Tailrace 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 January 2024.

How much traffic does Riffe Road over Pud Tailrace carry?

About 6 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Riffe Road over Pud Tailrace?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 26 ft wide.

Who owns Riffe Road over Pud Tailrace?

It is owned by the County Highway Agency.