US Bridges

Central Ave over U.S. Highway 101

Good

Mendocino County, California · 01-MEN-101-29.84 · Structure no. 10 0207

Built
1962
63 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
196 ft
4 main spans
Daily traffic
224
2008 count
Owner
State
State Highway Agency

About this bridge

Central Ave over U.S. Highway 101 is a concrete continuous slab carrying Central Ave over U.S. Highway 101 in Mendocino 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 224 vehicles a day, roughly 5% of them trucks, projected to reach 334 by 2042. The structure is 196 ft (59.6 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCentral Ave
CrossesU.S. Highway 101
Location01-MEN-101-29.84
RouteCounty Highway 0
Coordinates39.22543, -123.20781
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length196 ft (59.6 m)
Longest span60 ft (18.3 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic224 (2008)
Projected traffic334 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Central Ave over U.S. Highway 101 built?

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

What condition is Central Ave over U.S. Highway 101 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 June 2024.

How much traffic does Central Ave over U.S. Highway 101 carry?

About 224 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is Central Ave over U.S. Highway 101?

The structure is 196 ft (59.6 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.

Who owns Central Ave over U.S. Highway 101?

It is owned by the State Highway Agency.