US Bridges

Bear CR - Dewatto over Dewatto River

Good

Mason County, Washington · 9.56 W of Belfair HWY · Structure no. 087709000000000

Built
2008
17 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
79
2024 count
Owner
County
County Highway Agency

About this bridge

Bear CR - Dewatto over Dewatto River is a prestressed concrete slab carrying Bear CR - Dewatto over Dewatto River in Mason County, Washington. It was built in 2008, so it is 17 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 79 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2044. The structure is 33 ft (10.1 m) long and 32 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesBear CR - Dewatto
CrossesDewatto River
Location9.56 W of Belfair HWY
RouteCounty Highway 79800
Coordinates47.52397, -122.95869
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2024)
Projected traffic320 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$503,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bear CR - Dewatto over Dewatto River built?

It was built in 2008, making it 17 years old in 2025.

What condition is Bear CR - Dewatto over Dewatto 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 August 2024.

How much traffic does Bear CR - Dewatto over Dewatto River carry?

About 79 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Bear CR - Dewatto over Dewatto River?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Bear CR - Dewatto over Dewatto River?

It is owned by the County Highway Agency.