US Bridges

W138-N5 & S5-E138 over Zenobia Road

Good

Los Angeles County, California · 07-LA-138-0.14L · Structure no. 53 1802E

Built
1967
58 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
147 ft
3 main spans
Daily traffic
2,225
2019 count
Owner
State
State Highway Agency

About this bridge

W138-N5 & S5-E138 over Zenobia Road is a concrete continuous box beam or girders - multiple carrying W138-N5 & S5-E138 over Zenobia Road in Los Angeles County, California. It was built in 1967, so it is 58 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 2,225 vehicles a day, roughly 2% of them trucks, projected to reach 3,321 by 2042. The structure is 147 ft (44.8 m) long and 92 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesW138-N5 & S5-E138
CrossesZenobia Road
Location07-LA-138-0.14L
RouteState Highway 138
Coordinates34.76603, -118.7974
Functional classRural Principal Arterial - Other

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 inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length147 ft (44.8 m)
Longest span79 ft (24.1 m)
Deck width92 ft (28 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,225 (2019)
Projected traffic3,321 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 W138-N5 & S5-E138 over Zenobia Road built?

It was built in 1967, making it 58 years old in 2025.

What condition is W138-N5 & S5-E138 over Zenobia Road 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 October 2024.

How much traffic does W138-N5 & S5-E138 over Zenobia Road carry?

About 2,225 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is W138-N5 & S5-E138 over Zenobia Road?

The structure is 147 ft (44.8 m) long with a longest span of 79 ft (24.1 m) and a deck 92 ft wide.

Who owns W138-N5 & S5-E138 over Zenobia Road?

It is owned by the State Highway Agency.