US Bridges

Harvard Ave over San Diego Creek Channel

Fair

Orange County, California · 100 S/O Barranca Pkwy · Structure no. 55C0567

Built
1988
37 years old
Condition
Fair
inspected June 2022
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
100 ft
2 main spans
Daily traffic
20,000
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Harvard Ave over San Diego Creek Channel is a concrete continuous box beam or girders - multiple carrying Harvard Ave over San Diego Creek Channel in Orange County, California. It was built in 1988, so it is 37 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 6 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 20,000 vehicles a day, roughly 7% of them trucks, projected to reach 20,200 by 2040. The structure is 100 ft (30.6 m) long and 101 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHarvard Ave
CrossesSan Diego Creek Channel
Location100 S/O Barranca Pkwy
RouteCity Street 0
Coordinates33.68796, -117.81881
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.6 m)
Longest span50 ft (15.2 m)
Deck width101 ft (30.8 m)
Roadway width85 ft (25.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2018)
Projected traffic20,200 by 2040
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 Harvard Ave over San Diego Creek Channel built?

It was built in 1988, making it 37 years old in 2025.

What condition is Harvard Ave over San Diego Creek Channel 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 June 2022.

How much traffic does Harvard Ave over San Diego Creek Channel carry?

About 20,000 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Harvard Ave over San Diego Creek Channel?

The structure is 100 ft (30.6 m) long with a longest span of 50 ft (15.2 m) and a deck 101 ft wide.

Who owns Harvard Ave over San Diego Creek Channel?

It is owned by the City or Municipal Highway Agency.