US Bridges

Friars RD over San Diego River

Good

San Diego County, California · 0.7MI E/O I-15 · Structure no. 57C0175L

Built
1967
58 years old, rebuilt 1993
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
576 ft
6 main spans
Daily traffic
23,462
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Friars RD over San Diego River is a prestressed concrete stringer/multi-beam or girder carrying Friars RD over San Diego River in San Diego County, California. It was built in 1967 and reconstructed in 1993, 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 23,462 vehicles a day, roughly 1% of them trucks, projected to reach 24,724 by 2041. The structure is 576 ft (175.6 m) long and 55 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFriars RD
CrossesSan Diego River
Location0.7MI E/O I-15
RouteCity Street 0
Coordinates32.79047, -117.10376
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.5 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length576 ft (175.6 m)
Longest span96 ft (29.3 m)
Deck width55 ft (16.9 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,462 (2020)
Projected traffic24,724 by 2041
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Friars RD over San Diego River built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1993.

What condition is Friars RD over San Diego River 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 September 2024.

How much traffic does Friars RD over San Diego River carry?

About 23,462 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Friars RD over San Diego River?

The structure is 576 ft (175.6 m) long with a longest span of 96 ft (29.3 m) and a deck 55 ft wide.

Who owns Friars RD over San Diego River?

It is owned by the City or Municipal Highway Agency.