US Bridges

State Route 78 EB over Escondido Blvd

Fair

San Diego County, California · 11-SD-078-R17.41-ESD · Structure no. 57 0592R

Built
1967
58 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
154 ft
3 main spans
Daily traffic
28,000
2014 count
Owner
State
State Highway Agency

About this bridge

State Route 78 EB over Escondido Blvd is a concrete continuous box beam or girders - multiple carrying State Route 78 EB over Escondido Blvd in San Diego County, California. It was built in 1967, 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 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 28,000 vehicles a day, roughly 5% of them trucks, projected to reach 46,264 by 2040. The structure is 154 ft (46.9 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 78 EB
CrossesEscondido Blvd
Location11-SD-078-R17.41-ESD
RouteState Highway 78
Coordinates33.13134, -117.09038
Functional classUrban Other Principal Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating36 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span84 ft (25.6 m)
Deck width41 ft (12.5 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,000 (2014)
Projected traffic46,264 by 2040
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 State Route 78 EB over Escondido Blvd built?

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

What condition is State Route 78 EB over Escondido Blvd 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 State Route 78 EB over Escondido Blvd carry?

About 28,000 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is State Route 78 EB over Escondido Blvd?

The structure is 154 ft (46.9 m) long with a longest span of 84 ft (25.6 m) and a deck 41 ft wide.

Who owns State Route 78 EB over Escondido Blvd?

It is owned by the State Highway Agency.