US Bridges

Sloane Canyon Road over Sweetwater River

Good

San Diego County, California · 0.54 MI S/O Dehesa RD · Structure no. 57C0700

Built
1995
30 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
102 ft
1 main span
Daily traffic
42
2021 count
Owner
County
County Highway Agency

About this bridge

Sloane Canyon Road over Sweetwater River is a concrete box beam or girders - multiple carrying Sloane Canyon Road over Sweetwater River in San Diego County, California. It was built in 1995, so it is 30 years old, younger 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 42 vehicles a day, roughly 1% of them trucks, projected to reach 84 by 2043. The structure is 102 ft (31.2 m) long and 27 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesSloane Canyon Road
CrossesSweetwater River
Location0.54 MI S/O Dehesa RD
RouteCounty Highway 0
Coordinates32.77397, -116.84997
Functional classRural 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length102 ft (31.2 m)
Longest span100 ft (30.5 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42 (2021)
Projected traffic84 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 Sloane Canyon Road over Sweetwater River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Sloane Canyon Road over Sweetwater 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 2023.

How much traffic does Sloane Canyon Road over Sweetwater River carry?

About 42 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Sloane Canyon Road over Sweetwater River?

The structure is 102 ft (31.2 m) long with a longest span of 100 ft (30.5 m) and a deck 27 ft wide.

Who owns Sloane Canyon Road over Sweetwater River?

It is owned by the County Highway Agency.