US Bridges

Interstate 5 over Carmel Mountain RD

Fair

San Diego County, California · 11-SD-005-R31.80-SD · Structure no. 57 0314

Built
1966
59 years old, rebuilt 2007
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
198 ft
3 main spans
Daily traffic
203,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 over Carmel Mountain RD is a concrete continuous box beam or girders - multiple carrying Interstate 5 over Carmel Mountain RD in San Diego County, California. It was built in 1966 and reconstructed in 2007, so it is 59 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 203,000 vehicles a day, roughly 6% of them trucks, projected to reach 288,774 by 2047. The structure is 198 ft (60.3 m) long and 263 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 5
CrossesCarmel Mountain RD
Location11-SD-005-R31.80-SD
RouteInterstate 5
Coordinates32.9179, -117.23411
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
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 inspectionJanuary 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 alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating23.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length198 ft (60.3 m)
Longest span99 ft (30.3 m)
Deck width263 ft (80.3 m)
Roadway width256 ft (78.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic203,000 (2020)
Projected traffic288,774 by 2047
Trucks6%
Lanes on structure15
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 Carmel Mountain RD built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2007.

What condition is Interstate 5 over Carmel Mountain RD 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 January 2025.

How much traffic does Interstate 5 over Carmel Mountain RD carry?

About 203,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Interstate 5 over Carmel Mountain RD?

The structure is 198 ft (60.3 m) long with a longest span of 99 ft (30.3 m) and a deck 263 ft wide.

Who owns Interstate 5 over Carmel Mountain RD?

It is owned by the State Highway Agency.