US Bridges

Branscomb RD over Redwood Creek

Good

Mendocino County, California · 10.1 MI E of SH 1 · Structure no. 10C0082

Built
1967
58 years old
Condition
Good
inspected August 2024
Type
Tee Beam
Concrete
Length
62 ft
1 main span
Daily traffic
104
2011 count
Owner
County
County Highway Agency

About this bridge

Branscomb RD over Redwood Creek is a concrete tee beam carrying Branscomb RD over Redwood Creek in Mendocino County, California. It was built in 1967, so it is 58 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 331 by 2046. The structure is 62 ft (18.9 m) long and 30 ft wide. If it were closed, the detour would be 64 mi (103 km).

CarriesBranscomb RD
CrossesRedwood Creek
Location10.1 MI E of SH 1
RouteCounty Highway 0
Coordinates39.68003, -123.6573
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating42.5 US tons
Inventory rating32.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104 (2011)
Projected traffic331 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed64 mi (103 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 Redwood Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Branscomb RD over Redwood 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 Branscomb RD over Redwood Creek carry?

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

How long is Branscomb RD over Redwood Creek?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns Branscomb RD over Redwood Creek?

It is owned by the County Highway Agency.