US Bridges

Quinault S Shore over Merriman Creek

Good

Grays Harbor County, Washington · 6.6 E JCT SR 101 · Structure no. 079913000000000

Built
1985
40 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete
Length
31 ft
1 main span
Daily traffic
240
2020 count
Owner
County
County Highway Agency

About this bridge

Quinault S Shore over Merriman Creek is a concrete slab carrying Quinault S Shore over Merriman Creek in Grays Harbor County, Washington. It was built in 1985, so it is 40 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 240 vehicles a day, roughly 4% of them trucks, projected to reach 292 by 2040. The structure is 31 ft (9.5 m) long and 36 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesQuinault S Shore
CrossesMerriman Creek
Location6.6 E JCT SR 101
RouteCounty Highway 93400
Coordinates47.50063, -123.78472
Functional classRural Major 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 protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span30 ft (9.1 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2020)
Projected traffic292 by 2040
Trucks4%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Quinault S Shore over Merriman Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Quinault S Shore over Merriman 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 March 2024.

How much traffic does Quinault S Shore over Merriman Creek carry?

About 240 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Quinault S Shore over Merriman Creek?

The structure is 31 ft (9.5 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns Quinault S Shore over Merriman Creek?

It is owned by the County Highway Agency.