US Bridges

Glenn Ranch RD over Aliso Creek Channel

Good

Orange County, California · 100 W/O El Toro Road · Structure no. 55C0609

Built
1992
33 years old
Condition
Good
inspected September 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
258 ft
3 main spans
Daily traffic
1,000
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Glenn Ranch RD over Aliso Creek Channel is a prestressed concrete continuous box beam or girders - multiple carrying Glenn Ranch RD over Aliso Creek Channel in Orange County, California. It was built in 1992, so it is 33 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 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,624 by 2044. The structure is 258 ft (78.5 m) long and 103 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGlenn Ranch RD
CrossesAliso Creek Channel
Location100 W/O El Toro Road
RouteCity Street 0
Coordinates33.67033, -117.62772
Functional classRural 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 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length258 ft (78.5 m)
Longest span111 ft (33.8 m)
Deck width103 ft (31.3 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2017)
Projected traffic1,624 by 2044
Trucks1%
Lanes on structure4
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 Glenn Ranch RD over Aliso Creek Channel built?

It was built in 1992, making it 33 years old in 2025.

What condition is Glenn Ranch RD over Aliso 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 2022.

How much traffic does Glenn Ranch RD over Aliso Creek Channel carry?

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

How long is Glenn Ranch RD over Aliso Creek Channel?

The structure is 258 ft (78.5 m) long with a longest span of 111 ft (33.8 m) and a deck 103 ft wide.

Who owns Glenn Ranch RD over Aliso Creek Channel?

It is owned by the City or Municipal Highway Agency.