US Bridges

Orangethorpe Ave. over Carbon Canyon Channel

Good

Orange County, California · E of North Miller Street · Structure no. 55C0702

Built
2016
9 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
13,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Orangethorpe Ave. over Carbon Canyon Channel is a prestressed concrete stringer/multi-beam or girder carrying Orangethorpe Ave. over Carbon Canyon Channel in Orange County, California. It was built in 2016, so it is 9 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 13,000 vehicles a day, roughly 3% of them trucks, projected to reach 17,000 by 2042. The structure is 72 ft (22 m) long and 110 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesOrangethorpe Ave.
CrossesCarbon Canyon Channel
LocationE of North Miller Street
RouteCity Street 0
CountyOrange County
StateCalifornia
Coordinates33.86698, -117.85387
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 protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length72 ft (22 m)
Longest span69 ft (21 m)
Deck width110 ft (33.5 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2023)
Projected traffic17,000 by 2042
Trucks3%
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 Orangethorpe Ave. over Carbon Canyon Channel built?

It was built in 2016, making it 9 years old in 2025.

What condition is Orangethorpe Ave. over Carbon Canyon 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 May 2023.

How much traffic does Orangethorpe Ave. over Carbon Canyon Channel carry?

About 13,000 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Orangethorpe Ave. over Carbon Canyon Channel?

The structure is 72 ft (22 m) long with a longest span of 69 ft (21 m) and a deck 110 ft wide.

Who owns Orangethorpe Ave. over Carbon Canyon Channel?

It is owned by the City or Municipal Highway Agency.