US Bridges

Loara Street over Carbon Creek Channel

Good

Orange County, California · 0.2 Mi. N/O Crescent Ave. · Structure no. 55C0351

Built
1961
64 years old
Condition
Good
inspected September 2021
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
5,900
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Loara Street over Carbon Creek Channel is a prestressed concrete slab carrying Loara Street over Carbon Creek Channel in Orange County, California. It was built in 1961, so it is 64 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 5,900 vehicles a day, roughly 1% of them trucks, projected to reach 11,087 by 2043. The structure is 40 ft (12.2 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLoara Street
CrossesCarbon Creek Channel
Location0.2 Mi. N/O Crescent Ave.
RouteCity Street 0
Coordinates33.84219, -117.93722
Functional classUrban Local

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 inspectionSeptember 2021
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 rating73.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width38 ft (11.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2019)
Projected traffic11,087 by 2043
Trucks1%
Lanes on structure2
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 Loara Street over Carbon Creek Channel built?

It was built in 1961, making it 64 years old in 2025.

What condition is Loara Street over Carbon Creek 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 September 2021.

How much traffic does Loara Street over Carbon Creek Channel carry?

About 5,900 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Loara Street over Carbon Creek Channel?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 38 ft wide.

Who owns Loara Street over Carbon Creek Channel?

It is owned by the City or Municipal Highway Agency.