US Bridges

Walnut Ave over Lemon Street

Good

Orange County, California · 0.11 MI S/O Commonwealth · Structure no. 55C0308

Built
1978
47 years old
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
159 ft
4 main spans
Daily traffic
200
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Walnut Ave over Lemon Street is a prestressed concrete box beam or girders - multiple carrying Walnut Ave over Lemon Street in Orange County, California. It was built in 1978, so it is 47 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 200 vehicles a day, roughly 1% of them trucks, projected to reach 417 by 2042. The structure is 159 ft (48.5 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWalnut Ave
CrossesLemon Street
Location0.11 MI S/O Commonwealth
RouteState Lands Road 0
Coordinates33.86831, -117.92003
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.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span45 ft (13.7 m)
Deck width55 ft (16.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2018)
Projected traffic417 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and railroad
CrossesHighway
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 Walnut Ave over Lemon Street built?

It was built in 1978, making it 47 years old in 2025.

What condition is Walnut Ave over Lemon Street 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 February 2024.

How much traffic does Walnut Ave over Lemon Street carry?

About 200 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Walnut Ave over Lemon Street?

The structure is 159 ft (48.5 m) long with a longest span of 45 ft (13.7 m) and a deck 55 ft wide.

Who owns Walnut Ave over Lemon Street?

It is owned by the City or Municipal Highway Agency.