US Bridges

Marguerite Pkwy over Oso Creek Channel

Good

Orange County, California · 0.5 Mi. S/O LA Paz Road · Structure no. 55C0397

Built
1970
55 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
54 ft
3 main spans
Daily traffic
52,940
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marguerite Pkwy over Oso Creek Channel is a concrete culvert carrying Marguerite Pkwy over Oso Creek Channel in Orange County, California. It was built in 1970, 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 52,940 vehicles a day, roughly 1% of them trucks, projected to reach 64,025 by 2044. The structure is 54 ft (16.5 m) long and 118 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMarguerite Pkwy
CrossesOso Creek Channel
Location0.5 Mi. S/O LA Paz Road
RouteCity Street 0
Coordinates33.59089, -117.65952
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
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

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span12 ft (3.7 m)
Deck width118 ft (36 m)
Roadway width64 ft (19.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,940 (2024)
Projected traffic64,025 by 2044
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Marguerite Pkwy over Oso Creek Channel built?

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

What condition is Marguerite Pkwy over Oso 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 May 2024.

How much traffic does Marguerite Pkwy over Oso Creek Channel carry?

About 52,940 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Marguerite Pkwy over Oso Creek Channel?

The structure is 54 ft (16.5 m) long with a longest span of 12 ft (3.7 m) and a deck 118 ft wide.

Who owns Marguerite Pkwy over Oso Creek Channel?

It is owned by the City or Municipal Highway Agency.