US Bridges

Hollenbeck ST over Walnut Crk

Good

Los Angeles County, California · 0.3MI S/O I-10 Fwy · Structure no. 53C0700

Built
1960
65 years old
Condition
Good
inspected November 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
18,822
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hollenbeck ST over Walnut Crk is a prestressed concrete box beam or girders - multiple carrying Hollenbeck ST over Walnut Crk in Los Angeles County, California. It was built in 1960, so it is 65 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 18,822 vehicles a day, roughly 2% of them trucks, projected to reach 22,586 by 2040. The structure is 45 ft (13.7 m) long and 72 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHollenbeck ST
CrossesWalnut Crk
Location0.3MI S/O I-10 Fwy
RouteCity Street 0Q923
CountyLos Angeles County
StateCalifornia
Coordinates34.06759, -117.89885
Functional classUrban Minor Arterial

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 protection9 ExcellentNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span40 ft (12.2 m)
Deck width72 ft (22 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic18,822 (2018)
Projected traffic22,586 by 2040
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hollenbeck ST over Walnut Crk built?

It was built in 1960, making it 65 years old in 2025.

What condition is Hollenbeck ST over Walnut Crk 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 November 2021.

How much traffic does Hollenbeck ST over Walnut Crk carry?

About 18,822 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Hollenbeck ST over Walnut Crk?

The structure is 45 ft (13.7 m) long with a longest span of 40 ft (12.2 m) and a deck 72 ft wide.

Who owns Hollenbeck ST over Walnut Crk?

It is owned by the City or Municipal Highway Agency.