US Bridges

SR 3 over Deer Creek

Good

Mason County, Washington · 9.0 N JCT US 101 · Structure no. 0005604B0000000

Built
1957
68 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
71 ft
3 main spans
Daily traffic
15,878
2023 count
Owner
State
State Highway Agency

About this bridge

SR 3 over Deer Creek is a concrete continuous slab carrying SR 3 over Deer Creek in Mason County, Washington. It was built in 1957, so it is 68 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 15,878 vehicles a day, roughly 6% of them trucks, projected to reach 19,996 by 2039. The structure is 71 ft (21.6 m) long and 32 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesSR 3
CrossesDeer Creek
Location9.0 N JCT US 101
RouteState Highway 3
Coordinates47.26589, -123.00455
Functional classRural Principal Arterial - Other

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length71 ft (21.6 m)
Longest span27 ft (8.2 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,878 (2023)
Projected traffic19,996 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 3 over Deer Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR 3 over Deer 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 May 2023.

How much traffic does SR 3 over Deer Creek carry?

About 15,878 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 3 over Deer Creek?

The structure is 71 ft (21.6 m) long with a longest span of 27 ft (8.2 m) and a deck 32 ft wide.

Who owns SR 3 over Deer Creek?

It is owned by the State Highway Agency.