US Bridges

Upper Hoh Road over Unnamed Creek

Good

Jefferson County, Washington · 6.95 E JCT SR 101 · Structure no. 088866000000000

Built
2016
9 years old
Condition
Good
inspected May 2024
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
877
2020 count
Owner
County
County Highway Agency

About this bridge

Upper Hoh Road over Unnamed Creek is a concrete frame carrying Upper Hoh Road over Unnamed Creek in Jefferson County, Washington. It was built in 2016, so it is 9 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 22 ft (6.6 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUpper Hoh Road
CrossesUnnamed Creek
Location6.95 E JCT SR 101
RouteCounty Highway 91420
CountyJefferson County
StateWashington
Coordinates47.8169, -124.12936
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 above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating59 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length22 ft (6.6 m)
Longest span21 ft (6.4 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 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$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Upper Hoh Road over Unnamed Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Upper Hoh Road over Unnamed 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 Unnamed Creek carry?

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

How long is Upper Hoh Road over Unnamed Creek?

The structure is 22 ft (6.6 m) long with a longest span of 21 ft (6.4 m) and a deck 35 ft wide.

Who owns Upper Hoh Road over Unnamed Creek?

It is owned by the County Highway Agency.