US Bridges

Greenbriar Lane over Loftus Diversion Channel

Fair

Orange County, California · 100 Nw/O Associated Rd. · Structure no. 55C0543

Built
1968
57 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
5,000
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Greenbriar Lane over Loftus Diversion Channel is a concrete continuous culvert carrying Greenbriar Lane over Loftus Diversion Channel in Orange County, California. It was built in 1968, so it is 57 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,000 vehicles a day, roughly 1% of them trucks, projected to reach 6,456 by 2041. The structure is 39 ft (11.9 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGreenbriar Lane
CrossesLoftus Diversion Channel
Location100 Nw/O Associated Rd.
RouteCity Street 0
CountyOrange County
StateCalifornia
Coordinates33.91386, -117.87841
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span12 ft (3.7 m)
Deck width53 ft (16.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2017)
Projected traffic6,456 by 2041
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 Greenbriar Lane over Loftus Diversion Channel built?

It was built in 1968, making it 57 years old in 2025.

What condition is Greenbriar Lane over Loftus Diversion Channel in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Greenbriar Lane over Loftus Diversion Channel carry?

About 5,000 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Greenbriar Lane over Loftus Diversion Channel?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m) and a deck 53 ft wide.

Who owns Greenbriar Lane over Loftus Diversion Channel?

It is owned by the City or Municipal Highway Agency.