US Bridges

Old Coast Highway over Bixby Creek

Fair

Monterey County, California · 0.94 MI SE SH 1 · Structure no. 44C0165

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
37 ft
1 main span
Daily traffic
250
2013 count
Owner
County
County Highway Agency

About this bridge

Old Coast Highway over Bixby Creek is a concrete tee beam carrying Old Coast Highway over Bixby Creek in Monterey County, California. It was built in 1965, so it is 60 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 250 vehicles a day, roughly 1% of them trucks, projected to reach 508 by 2040. The structure is 37 ft (11.4 m) long and 19 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesOld Coast Highway
CrossesBixby Creek
Location0.94 MI SE SH 1
RouteCounty Highway 0
Coordinates36.36949, -121.89253
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span36 ft (11 m)
Deck width19 ft (5.7 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2013)
Projected traffic508 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 Old Coast Highway over Bixby Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Old Coast Highway over Bixby Creek 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 September 2023.

How much traffic does Old Coast Highway over Bixby Creek carry?

About 250 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Old Coast Highway over Bixby Creek?

The structure is 37 ft (11.4 m) long with a longest span of 36 ft (11 m) and a deck 19 ft wide.

Who owns Old Coast Highway over Bixby Creek?

It is owned by the County Highway Agency.