US Bridges

Lake Forest Drive over Serrano Creek

Good

Orange County, California · 0.11 Mi. S/O Route 241 · Structure no. 55C0598

Built
1991
34 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
35 ft
2 main spans
Daily traffic
8,415
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lake Forest Drive over Serrano Creek is a concrete culvert carrying Lake Forest Drive over Serrano Creek in Orange County, California. It was built in 1991, so it is 34 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 8,415 vehicles a day, roughly 1% of them trucks, projected to reach 12,614 by 2041. The structure is 35 ft (10.7 m) long and 122 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLake Forest Drive
CrossesSerrano Creek
Location0.11 Mi. S/O Route 241
RouteCity Street 0
Coordinates33.66978, -117.66093
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 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 alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span12 ft (3.7 m)
Deck width122 ft (37.2 m)
Roadway width79 ft (24.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,415 (2014)
Projected traffic12,614 by 2041
Trucks1%
Lanes on structure5
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 Lake Forest Drive over Serrano Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Lake Forest Drive over Serrano Creek 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 Lake Forest Drive over Serrano Creek carry?

About 8,415 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Lake Forest Drive over Serrano Creek?

The structure is 35 ft (10.7 m) long with a longest span of 12 ft (3.7 m) and a deck 122 ft wide.

Who owns Lake Forest Drive over Serrano Creek?

It is owned by the City or Municipal Highway Agency.