US Bridges

S/B Mission Bay DR over San Diego River

Good

San Diego County, California · 300 Ft N/O Route 8 · Structure no. 57C0887L

Built
2023
2 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
1,299 ft
7 main spans
Daily traffic
55,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

S/B Mission Bay DR over San Diego River is a concrete continuous box beam or girders - multiple carrying S/B Mission Bay DR over San Diego River in San Diego County, California. It was built in 2023, so it is 2 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 55,000 vehicles a day, roughly 1% of them trucks, projected to reach 64,343 by 2042. The structure is 1,299 ft (396 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS/B Mission Bay DR
CrossesSan Diego River
Location300 Ft N/O Route 8
RouteCity Street 0
Coordinates32.75769, -117.22425
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating62.8 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHL 93
Structure length1,299 ft (396 m)
Longest span200 ft (61 m)
Deck width74 ft (22.6 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,000 (2020)
Projected traffic64,343 by 2042
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 S/B Mission Bay DR over San Diego River built?

It was built in 2023, making it 2 years old in 2025.

What condition is S/B Mission Bay DR 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 June 2024.

How much traffic does S/B Mission Bay DR over San Diego River carry?

About 55,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is S/B Mission Bay DR over San Diego River?

The structure is 1,299 ft (396 m) long with a longest span of 200 ft (61 m) and a deck 74 ft wide.

Who owns S/B Mission Bay DR over San Diego River?

It is owned by the City or Municipal Highway Agency.