US Bridges

Riverwalk Drive over Strongs Creek

Good

Humboldt County, California · 0.9 MI North of HWY 101 · Structure no. 04C0085

Built
1962
63 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
98 ft
3 main spans
Daily traffic
2,322
2015 count
Owner
County
County Highway Agency

About this bridge

Riverwalk Drive over Strongs Creek is a concrete continuous slab carrying Riverwalk Drive over Strongs Creek in Humboldt County, California. It was built in 1962, so it is 63 years old, older 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 2,322 vehicles a day, roughly 3% of them trucks, projected to reach 4,500 by 2042. The structure is 98 ft (30 m) long and 29 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRiverwalk Drive
CrossesStrongs Creek
Location0.9 MI North of HWY 101
RouteCounty Highway 0
Coordinates40.58546, -124.15454
Functional classUrban Collector

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.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating29.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length98 ft (30 m)
Longest span32 ft (9.8 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,322 (2015)
Projected traffic4,500 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Riverwalk Drive over Strongs Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Riverwalk Drive over Strongs 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 August 2024.

How much traffic does Riverwalk Drive over Strongs Creek carry?

About 2,322 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Riverwalk Drive over Strongs Creek?

The structure is 98 ft (30 m) long with a longest span of 32 ft (9.8 m) and a deck 29 ft wide.

Who owns Riverwalk Drive over Strongs Creek?

It is owned by the County Highway Agency.