US Bridges

Hillery Drive Dar over Interstate 15

Good

San Diego County, California · 11-SD-015-M15.63-SD · Structure no. 57 1213

Built
2014
11 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
745 ft
6 main spans
Daily traffic
2,100
2020 count
Owner
State
State Highway Agency

About this bridge

Hillery Drive Dar over Interstate 15 is a prestressed concrete continuous box beam or girders - multiple carrying Hillery Drive Dar over Interstate 15 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,100 vehicles a day, roughly 1% of them trucks, projected to reach 3,000 by 2040. The structure is 745 ft (227.1 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesHillery Drive Dar
CrossesInterstate 15
Location11-SD-015-M15.63-SD
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates32.91287, -117.11638
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
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
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length745 ft (227.1 m)
Longest span136 ft (41.5 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2020)
Projected traffic3,000 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn an Interstate toll segment under Secretarial agreement
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 Hillery Drive Dar over Interstate 15 built?

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

What condition is Hillery Drive Dar over Interstate 15 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Hillery Drive Dar over Interstate 15 carry?

About 2,100 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Hillery Drive Dar over Interstate 15?

The structure is 745 ft (227.1 m) long with a longest span of 136 ft (41.5 m) and a deck 44 ft wide.

Who owns Hillery Drive Dar over Interstate 15?

It is owned by the State Highway Agency.