US Bridges

Upper Hoh Road over Hell Roaring Creek

Good

Jefferson County, Washington · 0.2NE JCT SR101 · Structure no. 082801000000000

Built
1981
44 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
120 ft
1 main span
Daily traffic
950
2020 count
Owner
County
County Highway Agency

About this bridge

Upper Hoh Road over Hell Roaring Creek is a concrete stringer/multi-beam or girder carrying Upper Hoh Road over Hell Roaring Creek in Jefferson County, Washington. It was built in 1981, so it is 44 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 950 vehicles a day, roughly 5% of them trucks, projected to reach 600 by 2040. The structure is 120 ft (36.6 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUpper Hoh Road
CrossesHell Roaring Creek
Location0.2NE JCT SR101
RouteCounty Highway 91420
CountyJefferson County
StateWashington
Coordinates47.80417, -124.26296
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 evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span117 ft (35.7 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2020)
Projected traffic600 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 statusHistorical significance not determinable at this time
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 Hell Roaring Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Upper Hoh Road over Hell Roaring 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 Hell Roaring Creek carry?

About 950 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Upper Hoh Road over Hell Roaring Creek?

The structure is 120 ft (36.6 m) long with a longest span of 117 ft (35.7 m) and a deck 32 ft wide.

Who owns Upper Hoh Road over Hell Roaring Creek?

It is owned by the County Highway Agency.