US Bridges

Boyle Ave over I- 5 N5-N101 S101-S5

Fair

Los Angeles County, California · 07-LA-005-16.76-LA · Structure no. 53 0597

Built
1947
78 years old, rebuilt 1960
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
604 ft
7 main spans
Daily traffic
19,500
2019 count
Owner
State
State Highway Agency

About this bridge

Boyle Ave over I- 5 N5-N101 S101-S5 is a concrete continuous box beam or girders - multiple carrying Boyle Ave over I- 5 N5-N101 S101-S5 in Los Angeles County, California. It was built in 1947 and reconstructed in 1960, so it is 78 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 19,500 vehicles a day, roughly 2% of them trucks, projected to reach 31,142 by 2041. The structure is 604 ft (184.2 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBoyle Ave
CrossesI- 5 N5-N101 S101-S5
Location07-LA-005-16.76-LA
RouteCity Street 0L336
CountyLos Angeles County
StateCalifornia
Coordinates34.03142, -118.21999
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7 (+2 approach)
Design loadHS 20
Structure length604 ft (184.2 m)
Longest span107 ft (32.6 m)
Deck width76 ft (23.2 m)
Roadway width60 ft (18.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2019)
Projected traffic31,142 by 2041
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Boyle Ave over I- 5 N5-N101 S101-S5 built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1960.

What condition is Boyle Ave over I- 5 N5-N101 S101-S5 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does Boyle Ave over I- 5 N5-N101 S101-S5 carry?

About 19,500 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Boyle Ave over I- 5 N5-N101 S101-S5?

The structure is 604 ft (184.2 m) long with a longest span of 107 ft (32.6 m) and a deck 76 ft wide.

Who owns Boyle Ave over I- 5 N5-N101 S101-S5?

It is owned by the State Highway Agency.