US Bridges

Upper Hoh Road over Tower Creek

Good

Jefferson County, Washington · 7.5E JCT SR101 · Structure no. 089342000000000

Built
2022
3 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
120 ft
1 main span
Daily traffic
877
2020 count
Owner
County
County Highway Agency

About this bridge

Upper Hoh Road over Tower Creek is a prestressed concrete tee beam carrying Upper Hoh Road over Tower Creek in Jefferson County, Washington. It was built in 2022, so it is 3 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 877 vehicles a day, roughly 5% of them trucks, projected to reach 1,191 by 2040. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUpper Hoh Road
CrossesTower Creek
Location7.5E JCT SR101
RouteCounty Highway 91420
CountyJefferson County
StateWashington
Coordinates47.81644, -124.11933
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating60 US tons
Inventory rating44.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span117 ft (35.8 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic877 (2020)
Projected traffic1,191 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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Upper Hoh Road over Tower Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Upper Hoh Road over Tower 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 May 2024.

How much traffic does Upper Hoh Road over Tower Creek carry?

About 877 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Upper Hoh Road over Tower Creek?

The structure is 120 ft (36.6 m) long with a longest span of 117 ft (35.8 m) and a deck 29 ft wide.

Who owns Upper Hoh Road over Tower Creek?

It is owned by the County Highway Agency.