US Bridges

SR 90 (imperial) over Santa Ana River

Good

Orange County, California · 12-ORA-090-12.59-ANA · Structure no. 55 0079

Built
1970
55 years old, rebuilt 1999
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
368 ft
4 main spans
Daily traffic
45,000
2020 count
Owner
State
State Highway Agency

About this bridge

SR 90 (imperial) over Santa Ana River is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 90 (imperial) over Santa Ana River in Orange County, California. It was built in 1970 and reconstructed in 1999, so it is 55 years old, older 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 45,000 vehicles a day, roughly 5% of them trucks, projected to reach 54,906 by 2040. The structure is 368 ft (112.2 m) long and 115 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 90 (imperial)
CrossesSanta Ana River
Location12-ORA-090-12.59-ANA
RouteState Highway 90
CountyOrange County
StateCalifornia
Coordinates33.85784, -117.79066
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length368 ft (112.2 m)
Longest span92 ft (28 m)
Deck width115 ft (34.9 m)
Roadway width91 ft (27.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,000 (2020)
Projected traffic54,906 by 2040
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 90 (imperial) over Santa Ana River built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1999.

What condition is SR 90 (imperial) over Santa Ana River 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 April 2023.

How much traffic does SR 90 (imperial) over Santa Ana River carry?

About 45,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is SR 90 (imperial) over Santa Ana River?

The structure is 368 ft (112.2 m) long with a longest span of 92 ft (28 m) and a deck 115 ft wide.

Who owns SR 90 (imperial) over Santa Ana River?

It is owned by the State Highway Agency.