US Bridges

Deckerville Road over Dry Bed Creek

Good

Mason County, Washington · 0.59 W JCT Matlock · Structure no. 081080000000000

Built
1963
62 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
60 ft
3 main spans
Daily traffic
149
2020 count
Owner
County
County Highway Agency

About this bridge

Deckerville Road over Dry Bed Creek is a concrete continuous slab carrying Deckerville Road over Dry Bed Creek in Mason County, Washington. It was built in 1963, so it is 62 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 149 vehicles a day, roughly 15% of them trucks, projected to reach 350 by 2040. The structure is 60 ft (18.3 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesDeckerville Road
CrossesDry Bed Creek
Location0.59 W JCT Matlock
RouteCounty Highway 800
CountyMason County
StateWashington
Coordinates47.22756, -123.42264
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length60 ft (18.3 m)
Longest span27 ft (8.2 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic149 (2020)
Projected traffic350 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$50,000 (2035 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Deckerville Road over Dry Bed Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Deckerville Road over Dry Bed Creek 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 July 2023.

How much traffic does Deckerville Road over Dry Bed Creek carry?

About 149 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Deckerville Road over Dry Bed Creek?

The structure is 60 ft (18.3 m) long with a longest span of 27 ft (8.2 m) and a deck 28 ft wide.

Who owns Deckerville Road over Dry Bed Creek?

It is owned by the County Highway Agency.