US Bridges

First Street over Santa Ana River Channel

Good

Orange County, California · 0.5 MI E/O Harbor Blvd · Structure no. 55C0689

Built
2012
13 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
320 ft
3 main spans
Daily traffic
30,000
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

First Street over Santa Ana River Channel is a prestressed concrete stringer/multi-beam or girder carrying First Street over Santa Ana River Channel in Orange County, California. It was built in 2012, so it is 13 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 53,226 by 2040. The structure is 320 ft (97.5 m) long and 92 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFirst Street
CrossesSanta Ana River Channel
Location0.5 MI E/O Harbor Blvd
RouteCity Street 0
Coordinates33.74511, -117.91137
Functional classUrban Other Principal 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 inspectionFebruary 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 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

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span120 ft (36.6 m)
Deck width92 ft (28 m)
Roadway width70 ft (21.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,000 (2021)
Projected traffic53,226 by 2040
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 First Street over Santa Ana River Channel built?

It was built in 2012, making it 13 years old in 2025.

What condition is First Street 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 February 2023.

How much traffic does First Street over Santa Ana River Channel carry?

About 30,000 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is First Street over Santa Ana River Channel?

The structure is 320 ft (97.5 m) long with a longest span of 120 ft (36.6 m) and a deck 92 ft wide.

Who owns First Street over Santa Ana River Channel?

It is owned by the City or Municipal Highway Agency.