US Bridges

Parpala Road over Dell Creek

Good

Pacific County, Washington · 1.3 SW JCT 4 & 401 · Structure no. 080834000000000

Built
1972
53 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
740
2023 count
Owner
County
County Highway Agency

About this bridge

Parpala Road over Dell Creek is a concrete continuous slab carrying Parpala Road over Dell Creek in Pacific County, Washington. It was built in 1972, so it is 53 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 740 vehicles a day, roughly 5% of them trucks, projected to reach 300 by 2043. The structure is 50 ft (15.2 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesParpala Road
CrossesDell Creek
Location1.3 SW JCT 4 & 401
RouteCounty Highway 91190
Coordinates46.36783, -123.82136
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckOther
Main spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic740 (2023)
Projected traffic300 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$855,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Parpala Road over Dell Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Parpala Road over Dell 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 June 2024.

How much traffic does Parpala Road over Dell Creek carry?

About 740 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Parpala Road over Dell Creek?

The structure is 50 ft (15.2 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns Parpala Road over Dell Creek?

It is owned by the County Highway Agency.