US Bridges

Hill Street over Route 101

Good

Los Angeles County, California · 07-LA-101-1.13-LA · Structure no. 53 0625

Built
1951
74 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
350 ft
3 main spans
Daily traffic
25,000
2018 count
Owner
State
State Highway Agency

About this bridge

Hill Street over Route 101 is a concrete continuous box beam or girders - multiple carrying Hill Street over Route 101 in Los Angeles County, California. It was built in 1951, so it is 74 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 25,000 vehicles a day, roughly 1% of them trucks, projected to reach 33,882 by 2040. The structure is 350 ft (106.7 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHill Street
CrossesRoute 101
Location07-LA-101-1.13-LA
RouteCity Street 0L314
Coordinates34.05704, -118.24342
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 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 rating81 US tons
Inventory rating48.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length350 ft (106.7 m)
Longest span133 ft (40.5 m)
Deck width82 ft (25 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,000 (2018)
Projected traffic33,882 by 2040
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 Hill Street over Route 101 built?

It was built in 1951, making it 74 years old in 2025.

What condition is Hill Street over Route 101 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 2023.

How much traffic does Hill Street over Route 101 carry?

About 25,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Hill Street over Route 101?

The structure is 350 ft (106.7 m) long with a longest span of 133 ft (40.5 m) and a deck 82 ft wide.

Who owns Hill Street over Route 101?

It is owned by the State Highway Agency.