US Bridges

Schaffer Park RD over East Fork Satsop River

Good

Mason County, Washington · 1.29 E Matlock Brady RD · Structure no. 086080000000000

Built
1993
32 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
160 ft
1 main span
Daily traffic
376
2020 count
Owner
County
County Highway Agency

About this bridge

Schaffer Park RD over East Fork Satsop River is a prestressed concrete tee beam carrying Schaffer Park RD over East Fork Satsop River in Mason County, Washington. It was built in 1993, so it is 32 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 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 376 vehicles a day, roughly 10% of them trucks, projected to reach 950 by 2040. The structure is 160 ft (48.8 m) long and 35 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesSchaffer Park RD
CrossesEast Fork Satsop River
Location1.29 E Matlock Brady RD
RouteCounty Highway 2070
Coordinates47.09833, -123.46667
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span100 ft (30.5 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic376 (2020)
Projected traffic950 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed18 mi (29 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$3,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Schaffer Park RD over East Fork Satsop River built?

It was built in 1993, making it 32 years old in 2025.

What condition is Schaffer Park RD over East Fork Satsop 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 June 2024.

How much traffic does Schaffer Park RD over East Fork Satsop River carry?

About 376 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Schaffer Park RD over East Fork Satsop River?

The structure is 160 ft (48.8 m) long with a longest span of 100 ft (30.5 m) and a deck 35 ft wide.

Who owns Schaffer Park RD over East Fork Satsop River?

It is owned by the County Highway Agency.