US Bridges

Sam Jones Road over San Antonio River

FairPosted for load

Monterey County, California · W Tule Airstrip Sec 22/25 · Structure no. DAPFORLIG000763

Built
1968
57 years old, rebuilt 2005
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
302 ft
5 main spans
Daily traffic
8
2021 count
Owner
Federal
Army

About this bridge

Sam Jones Road over San Antonio River is a steel stringer/multi-beam or girder carrying Sam Jones Road over San Antonio River in Monterey County, California. It was built in 1968 and reconstructed in 2005, so it is 57 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. Its operating status is: posted for load restriction.

It carries about 8 vehicles a day, roughly 4% of them trucks, projected to reach 32 by 2045. The structure is 302 ft (92 m) long and 15 ft wide.

Location

Open in Google Maps
CarriesSam Jones Road
CrossesSan Antonio River
LocationW Tule Airstrip Sec 22/25
CountyMonterey County
StateCalifornia
Coordinates35.91187, -121.1315
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans5
Design loadUnknown
Structure length302 ft (92 m)
Longest span60 ft (18.3 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8 (2021)
Projected traffic32 by 2045
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sam Jones Road over San Antonio River built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2005.

What condition is Sam Jones Road over San Antonio 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 October 2023.

How much traffic does Sam Jones Road over San Antonio River carry?

About 8 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Sam Jones Road over San Antonio River?

The structure is 302 ft (92 m) long with a longest span of 60 ft (18.3 m) and a deck 15 ft wide.

Who owns Sam Jones Road over San Antonio River?

It is owned by the Army.