US Bridges

Interstate 5 over Damon Ave

Fair

San Diego County, California · 11-SD-005-R23.70-SD · Structure no. 57 0290

Built
1954
71 years old, rebuilt 1969
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Concrete
Length
51 ft
1 main span
Daily traffic
143,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 over Damon Ave is a concrete box beam or girders - multiple carrying Interstate 5 over Damon Ave in San Diego County, California. It was built in 1954 and reconstructed in 1969, so it is 71 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 143,000 vehicles a day, roughly 4% of them trucks, projected to reach 216,211 by 2047. The structure is 51 ft (15.5 m) long and 154 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInterstate 5
CrossesDamon Ave
Location11-SD-005-R23.70-SD
RouteInterstate 5
CountySan Diego County
StateCalifornia
Coordinates32.80948, -117.21779
Functional classUrban Principal Arterial - Interstate

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 inspectionFebruary 2025
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 geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.7 US tons
Inventory rating45.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span48 ft (14.6 m)
Deck width154 ft (46.9 m)
Roadway width151 ft (46 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic143,000 (2020)
Projected traffic216,211 by 2047
Trucks4%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Interstate 5 over Damon Ave built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1969.

What condition is Interstate 5 over Damon Ave 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 February 2025.

How much traffic does Interstate 5 over Damon Ave carry?

About 143,000 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Interstate 5 over Damon Ave?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.6 m) and a deck 154 ft wide.

Who owns Interstate 5 over Damon Ave?

It is owned by the State Highway Agency.