US Bridges

Segerstrom-Slater over Santa Ana River Channel

Good

Orange County, California · 0.3 Mi. W/O Harbor Blvd. · Structure no. 55C0371

Built
1974
51 years old, rebuilt 1982
Condition
Good
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
328 ft
5 main spans
Daily traffic
30,000
2019 count
Owner
County
County Highway Agency

About this bridge

Segerstrom-Slater over Santa Ana River Channel is a concrete continuous tee beam carrying Segerstrom-Slater over Santa Ana River Channel in Orange County, California. It was built in 1974 and reconstructed in 1982, so it is 51 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 30,000 vehicles a day, roughly 1% of them trucks, projected to reach 48,034 by 2041. The structure is 328 ft (100 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSegerstrom-Slater
CrossesSanta Ana River Channel
Location0.3 Mi. W/O Harbor Blvd.
RouteCounty Highway 0
Coordinates33.70898, -117.92608
Functional classUrban Minor Arterial

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.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length328 ft (100 m)
Longest span72 ft (21.9 m)
Deck width76 ft (23.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,000 (2019)
Projected traffic48,034 by 2041
Trucks1%
Lanes on structure4
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

OwnerCounty Highway Agency
Maintained byCounty 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 Segerstrom-Slater over Santa Ana River Channel built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1982.

What condition is Segerstrom-Slater over Santa Ana River Channel 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 August 2024.

How much traffic does Segerstrom-Slater over Santa Ana River Channel carry?

About 30,000 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Segerstrom-Slater over Santa Ana River Channel?

The structure is 328 ft (100 m) long with a longest span of 72 ft (21.9 m) and a deck 76 ft wide.

Who owns Segerstrom-Slater over Santa Ana River Channel?

It is owned by the County Highway Agency.