US Bridges

State Route 96 over Hillside

Good

Humboldt County, California · 01-HUM-096-8.26 · Structure no. 04 0288

Built
1985
40 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
165 ft
9 main spans
Daily traffic
2,900
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 96 over Hillside is a concrete continuous slab carrying State Route 96 over Hillside in Humboldt County, California. It was built in 1985, so it is 40 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,900 vehicles a day, roughly 2% of them trucks, projected to reach 3,679 by 2042. The structure is 165 ft (50.4 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesState Route 96
CrossesHillside
Location01-HUM-096-8.26
RouteState Highway 96
Coordinates41.02162, -123.64133
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25.4 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20 + Mod
Structure length165 ft (50.4 m)
Longest span19 ft (5.8 m)
Deck width14 ft (4.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2009)
Projected traffic3,679 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed123.7 mi (199 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 1985, making it 40 years old in 2025.

What condition is State Route 96 over Hillside 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 September 2024.

How much traffic does State Route 96 over Hillside carry?

About 2,900 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is State Route 96 over Hillside?

The structure is 165 ft (50.4 m) long with a longest span of 19 ft (5.8 m) and a deck 14 ft wide.

Who owns State Route 96 over Hillside?

It is owned by the State Highway Agency.