US Bridges

Hunter Point RD NW over Unamed Creek

Good

Thurston County, Washington · 0.25 M W of Steamboat RD · Structure no. 089020000000000

Built
2018
7 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
81 ft
1 main span
Daily traffic
387
2020 count
Owner
County
County Highway Agency

About this bridge

Hunter Point RD NW over Unamed Creek is a steel stringer/multi-beam or girder carrying Hunter Point RD NW over Unamed Creek in Thurston County, Washington. It was built in 2018, so it is 7 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 387 vehicles a day, roughly 1% of them trucks, projected to reach 598 by 2042. The structure is 81 ft (24.7 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesHunter Point RD NW
CrossesUnamed Creek
Location0.25 M W of Steamboat RD
RouteCounty Highway 12270
CountyThurston County
StateWashington
Coordinates47.16023, -122.94092
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation8: Equal to present desirable 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 alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length81 ft (24.7 m)
Longest span80 ft (24.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic387 (2020)
Projected traffic598 by 2042
Trucks1%
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$3.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hunter Point RD NW over Unamed Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is Hunter Point RD NW over Unamed 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 April 2023.

How much traffic does Hunter Point RD NW over Unamed Creek carry?

About 387 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Hunter Point RD NW over Unamed Creek?

The structure is 81 ft (24.7 m) long with a longest span of 80 ft (24.4 m) and a deck 26 ft wide.

Who owns Hunter Point RD NW over Unamed Creek?

It is owned by the County Highway Agency.