US Bridges

Carroll Canyon RD over Business Access Road

Fair

San Diego County, California · 100FT S/O Int Mira Mesa · Structure no. 57C0787

Built
2014
11 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
79 ft
1 main span
Daily traffic
12,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Carroll Canyon RD over Business Access Road is a concrete box beam or girders - multiple carrying Carroll Canyon RD over Business Access Road in San Diego County, California. It was built in 2014, so it is 11 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 12,000 vehicles a day, roughly 5% of them trucks, projected to reach 15,000 by 2041. The structure is 79 ft (24.2 m) long and 96 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCarroll Canyon RD
CrossesBusiness Access Road
Location100FT S/O Int Mira Mesa
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates32.88968, -117.20861
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length79 ft (24.2 m)
Longest span79 ft (24.2 m)
Deck width96 ft (29.2 m)
Roadway width85 ft (26 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2020)
Projected traffic15,000 by 2041
Trucks5%
Lanes on structure6
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Carroll Canyon RD over Business Access Road built?

It was built in 2014, making it 11 years old in 2025.

What condition is Carroll Canyon RD over Business Access Road 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 2024.

How much traffic does Carroll Canyon RD over Business Access Road carry?

About 12,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Carroll Canyon RD over Business Access Road?

The structure is 79 ft (24.2 m) long with a longest span of 79 ft (24.2 m) and a deck 96 ft wide.

Who owns Carroll Canyon RD over Business Access Road?

It is owned by the City or Municipal Highway Agency.