US Bridges

Smith Point over South Fork Eel River

Fair

Humboldt County, California · Old Smith Point · Structure no. 04C0239

Built
1934
91 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
555 ft
4 main spans
Daily traffic
69
2010 count
Owner
County
County Highway Agency

About this bridge

Smith Point over South Fork Eel River is a steel continuous stringer/multi-beam or girder carrying Smith Point over South Fork Eel River in Humboldt County, California. It was built in 1934, so it is 91 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 5 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 69 vehicles a day, roughly 1% of them trucks, projected to reach 102 by 2045. The structure is 555 ft (169.2 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSmith Point
CrossesSouth Fork Eel River
LocationOld Smith Point
RouteCounty Highway 0
Coordinates40.03218, -123.77815
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating66 US tons
Inventory rating39.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadH 15
Structure length555 ft (169.2 m)
Longest span120 ft (36.6 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69 (2010)
Projected traffic102 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Smith Point over South Fork Eel River built?

It was built in 1934, making it 91 years old in 2025.

What condition is Smith Point over South Fork Eel River 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 July 2023.

How much traffic does Smith Point over South Fork Eel River carry?

About 69 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Smith Point over South Fork Eel River?

The structure is 555 ft (169.2 m) long with a longest span of 120 ft (36.6 m) and a deck 28 ft wide.

Who owns Smith Point over South Fork Eel River?

It is owned by the County Highway Agency.