US Bridges

Riverside DR over Sweetwater River

Fair

San Diego County, California · 0.3 MI N/O SR 79 · Structure no. 57C0371

Built
1947
78 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
183 ft
6 main spans
Daily traffic
2,500
2016 count
Owner
County
County Highway Agency

About this bridge

Riverside DR over Sweetwater River is a concrete continuous slab carrying Riverside DR over Sweetwater River in San Diego County, California. It was built in 1947, so it is 78 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 6 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 2,500 vehicles a day, roughly 1% of them trucks, projected to reach 2,634 by 2041. The structure is 183 ft (55.8 m) long and 27 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesRiverside DR
CrossesSweetwater River
Location0.3 MI N/O SR 79
RouteCounty Highway 0
CountySan Diego County
StateCalifornia
Coordinates32.84572, -116.61299
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating40.3 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length183 ft (55.8 m)
Longest span28 ft (8.5 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2016)
Projected traffic2,634 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 Riverside DR over Sweetwater River built?

It was built in 1947, making it 78 years old in 2025.

What condition is Riverside DR over Sweetwater 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 May 2023.

How much traffic does Riverside DR over Sweetwater River carry?

About 2,500 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Riverside DR over Sweetwater River?

The structure is 183 ft (55.8 m) long with a longest span of 28 ft (8.5 m) and a deck 27 ft wide.

Who owns Riverside DR over Sweetwater River?

It is owned by the County Highway Agency.