US Bridges

Branscomb RD over South Fork Eel River

Good

Mendocino County, California · 1.5 MI E Wilderness Rdge · Structure no. 10C0081

Built
1961
64 years old
Condition
Good
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
104
2011 count
Owner
County
County Highway Agency

About this bridge

Branscomb RD over South Fork Eel River is a concrete continuous tee beam carrying Branscomb RD over South Fork Eel River in Mendocino County, California. It was built in 1961, so it is 64 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 104 vehicles a day, roughly 10% of them trucks, projected to reach 327 by 2046. The structure is 142 ft (43.3 m) long and 29 ft wide. If it were closed, the detour would be 95.7 mi (154 km).

CarriesBranscomb RD
CrossesSouth Fork Eel River
Location1.5 MI E Wilderness Rdge
RouteCounty Highway 0
Coordinates39.68111, -123.6502
Functional classRural Major 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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span70 ft (21.3 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104 (2011)
Projected traffic327 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed95.7 mi (154 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 Branscomb RD over South Fork Eel River built?

It was built in 1961, making it 64 years old in 2025.

What condition is Branscomb RD over South Fork Eel River 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 Branscomb RD over South Fork Eel River carry?

About 104 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is Branscomb RD over South Fork Eel River?

The structure is 142 ft (43.3 m) long with a longest span of 70 ft (21.3 m) and a deck 29 ft wide.

Who owns Branscomb RD over South Fork Eel River?

It is owned by the County Highway Agency.