US Bridges

Balboa Ave EB over ROUTE15

Fair

San Diego County, California · 11-SD-015-R9.23-SD · Structure no. 57 0878R

Built
1982
43 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
306 ft
2 main spans
Daily traffic
13,000
2020 count
Owner
State
State Highway Agency

About this bridge

Balboa Ave EB over ROUTE15 is a prestressed concrete continuous box beam or girders - multiple carrying Balboa Ave EB over ROUTE15 in San Diego County, California. It was built in 1982, so it is 43 years old, younger 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 13,000 vehicles a day, roughly 3% of them trucks, projected to reach 24,129 by 2041. The structure is 306 ft (93.3 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBalboa Ave EB
CrossesROUTE15
Location11-SD-015-R9.23-SD
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates32.8227, -117.117
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length306 ft (93.3 m)
Longest span152 ft (46.3 m)
Deck width51 ft (15.4 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic13,000 (2020)
Projected traffic24,129 by 2041
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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 Balboa Ave EB over ROUTE15 built?

It was built in 1982, making it 43 years old in 2025.

What condition is Balboa Ave EB over ROUTE15 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 July 2023.

How much traffic does Balboa Ave EB over ROUTE15 carry?

About 13,000 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Balboa Ave EB over ROUTE15?

The structure is 306 ft (93.3 m) long with a longest span of 152 ft (46.3 m) and a deck 51 ft wide.

Who owns Balboa Ave EB over ROUTE15?

It is owned by the State Highway Agency.