US Bridges

South Bank Road over Harris Creek

Good

Grays Harbor County, Washington · 0.5 SW JCT SR 12 · Structure no. 088484000000000

Built
2012
13 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
94 ft
8 main spans
Daily traffic
1,281
2022 count
Owner
County
County Highway Agency

About this bridge

South Bank Road over Harris Creek is a concrete culvert carrying South Bank Road over Harris Creek in Grays Harbor County, Washington. It was built in 2012, so it is 13 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 1,281 vehicles a day, roughly 23% of them trucks, projected to reach 1,563 by 2042. The structure is 94 ft (28.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSouth Bank Road
CrossesHarris Creek
Location0.5 SW JCT SR 12
RouteCounty Highway 96411
Coordinates46.83333, -123.23306
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans8
Design loadHL 93
Structure length94 ft (28.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,281 (2022)
Projected traffic1,563 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$3.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was South Bank Road over Harris Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is South Bank Road over Harris 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 September 2024.

How much traffic does South Bank Road over Harris Creek carry?

About 1,281 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is South Bank Road over Harris Creek?

The structure is 94 ft (28.7 m) long with a longest span of 10 ft (3 m).

Who owns South Bank Road over Harris Creek?

It is owned by the County Highway Agency.