US Bridges

Motor Transport CO over S. Fork San Onofre Creek

Good

San Diego County, California · 260 SW of Basilone Road · Structure no. 2CA0006

Built
1960
65 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
50
2004 count
Owner
Federal
Navy / Marines

About this bridge

Motor Transport CO over S. Fork San Onofre Creek is a prestressed concrete stringer/multi-beam or girder carrying Motor Transport CO over S. Fork San Onofre Creek in San Diego County, California. It was built in 1960, so it is 65 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 60 by 2043. The structure is 74 ft (22.6 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMotor Transport CO
CrossesS. Fork San Onofre Creek
Location260 SW of Basilone Road
RouteFederal Lands Road 0
Coordinates33.3814, -117.48557
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.9 US tons
Inventory rating35.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length74 ft (22.6 m)
Longest span74 ft (22.6 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2004)
Projected traffic60 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNavy / Marines
Maintained byNavy / Marines
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$22,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Motor Transport CO over S. Fork San Onofre Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Motor Transport CO over S. Fork San Onofre 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 October 2024.

How much traffic does Motor Transport CO over S. Fork San Onofre Creek carry?

About 50 vehicles per day (2004 count), of which roughly 1% are trucks.

How long is Motor Transport CO over S. Fork San Onofre Creek?

The structure is 74 ft (22.6 m) long with a longest span of 74 ft (22.6 m) and a deck 35 ft wide.

Who owns Motor Transport CO over S. Fork San Onofre Creek?

It is owned by the Navy / Marines.