US Bridges

Mar Vista Drive over State Route 78

Fair

San Diego County, California · 11-SD-078-7.71-VSTA · Structure no. 57 0401

Built
1962
63 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
263 ft
4 main spans
Daily traffic
2,200
2020 count
Owner
State
State Highway Agency

About this bridge

Mar Vista Drive over State Route 78 is a concrete continuous box beam or girders - multiple carrying Mar Vista Drive over State Route 78 in San Diego County, California. It was built in 1962, so it is 63 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 5 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 2,200 vehicles a day, roughly 1% of them trucks, projected to reach 5,239 by 2040. The structure is 263 ft (80.2 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMar Vista Drive
CrossesState Route 78
Location11-SD-078-7.71-VSTA
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates33.18125, -117.22995
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length263 ft (80.2 m)
Longest span99 ft (30.2 m)
Deck width40 ft (12.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2020)
Projected traffic5,239 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mar Vista Drive over State Route 78 built?

It was built in 1962, making it 63 years old in 2025.

What condition is Mar Vista Drive over State Route 78 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 March 2023.

How much traffic does Mar Vista Drive over State Route 78 carry?

About 2,200 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Mar Vista Drive over State Route 78?

The structure is 263 ft (80.2 m) long with a longest span of 99 ft (30.2 m) and a deck 40 ft wide.

Who owns Mar Vista Drive over State Route 78?

It is owned by the State Highway Agency.