US Bridges

U.S. Highway 101 over Smith Riv South Bank RD

Good

Del Norte County, California · 01-DN-101-36.06 · Structure no. 01 0042

Built
2023
2 years old
Condition
Good
inspected April 2024
Type
Truss - Thru
Steel Continuous
Length
1,002 ft
5 main spans
Daily traffic
7,200
2019 count
Owner
State
State Highway Agency

About this bridge

U.S. Highway 101 over Smith Riv South Bank RD is a steel continuous truss - thru carrying U.S. Highway 101 over Smith Riv South Bank RD in Del Norte County, California. It was built in 2023, so it is 2 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 7,200 vehicles a day, roughly 6% of them trucks, projected to reach 9,400 by 2044. The structure is 1,002 ft (305.4 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesU.S. Highway 101
CrossesSmith Riv South Bank RD
Location01-DN-101-36.06
RouteU.S. Route 101
Coordinates41.8779, -124.13728
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckSteel plate
Main spans5
Design loadHL 93
Structure length1,002 ft (305.4 m)
Longest span200 ft (61 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,200 (2019)
Projected traffic9,400 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 U.S. Highway 101 over Smith Riv South Bank RD built?

It was built in 2023, making it 2 years old in 2025.

What condition is U.S. Highway 101 over Smith Riv South Bank RD 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 April 2024.

How much traffic does U.S. Highway 101 over Smith Riv South Bank RD carry?

About 7,200 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is U.S. Highway 101 over Smith Riv South Bank RD?

The structure is 1,002 ft (305.4 m) long with a longest span of 200 ft (61 m) and a deck 30 ft wide.

Who owns U.S. Highway 101 over Smith Riv South Bank RD?

It is owned by the State Highway Agency.