US Bridges

Polson Camp Road over Big Creek

Good

Grays Harbor County, Washington · 0.3 NE JCT SR 101 · Structure no. 088996000000000

Built
2017
8 years old
Condition
Good
inspected March 2024
Type
Slab
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
35
2020 count
Owner
County
County Highway Agency

About this bridge

Polson Camp Road over Big Creek is a prestressed concrete slab carrying Polson Camp Road over Big Creek in Grays Harbor County, Washington. It was built in 2017, so it is 8 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 35 vehicles a day, roughly 5% of them trucks, projected to reach 52 by 2040. The structure is 51 ft (15.5 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesPolson Camp Road
CrossesBig Creek
Location0.3 NE JCT SR 101
RouteCounty Highway 47830
Coordinates47.16483, -123.87662
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 inspectionMarch 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 alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating71.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length51 ft (15.5 m)
Longest span46 ft (13.9 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2020)
Projected traffic52 by 2040
Trucks5%
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Polson Camp Road over Big Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Polson Camp Road over Big 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 Polson Camp Road over Big Creek carry?

About 35 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Polson Camp Road over Big Creek?

The structure is 51 ft (15.5 m) long with a longest span of 46 ft (13.9 m) and a deck 31 ft wide.

Who owns Polson Camp Road over Big Creek?

It is owned by the County Highway Agency.