US Bridges

State Route 96 over Hillside

Fair

Humboldt County, California · 01-HUM-096-16.76 · Structure no. 04 0053

Built
1966
59 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
158 ft
1 main span
Daily traffic
1,505
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 96 over Hillside is a steel stringer/multi-beam or girder carrying State Route 96 over Hillside in Humboldt County, California. It was built in 1966, so it is 59 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,505 vehicles a day, projected to reach 3,302 by 2046. The structure is 158 ft (48.3 m) long and 32 ft wide. If it were closed, the detour would be 88.9 mi (143 km).

Location

Open in Google Maps
CarriesState Route 96
CrossesHillside
Location01-HUM-096-16.76
RouteState Highway 96
CountyHumboldt County
StateCalifornia
Coordinates41.11644, -123.6882
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.2 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length158 ft (48.3 m)
Longest span158 ft (48.3 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,505 (2009)
Projected traffic3,302 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed88.9 mi (143 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 96 over Hillside built?

It was built in 1966, making it 59 years old in 2025.

What condition is State Route 96 over Hillside in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does State Route 96 over Hillside carry?

About 1,505 vehicles per day (2009 count).

How long is State Route 96 over Hillside?

The structure is 158 ft (48.3 m) long with a longest span of 158 ft (48.3 m) and a deck 32 ft wide.

Who owns State Route 96 over Hillside?

It is owned by the State Highway Agency.