US Bridges

Pasadena Ave over ST RTE 110 & Arroyo Seco

Good

Los Angeles County, California · 07-LA-110-26.48-LA · Structure no. 53 0426

Built
1940
85 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
181 ft
3 main spans
Daily traffic
15,500
2021 count
Owner
State
State Highway Agency

About this bridge

Pasadena Ave over ST RTE 110 & Arroyo Seco is a concrete continuous tee beam carrying Pasadena Ave over ST RTE 110 & Arroyo Seco in Los Angeles County, California. It was built in 1940, so it is 85 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 15,500 vehicles a day, roughly 1% of them trucks, projected to reach 11,334 by 2041. The structure is 181 ft (55.2 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPasadena Ave
CrossesST RTE 110 & Arroyo Seco
Location07-LA-110-26.48-LA
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.08661, -118.21283
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span78 ft (23.8 m)
Deck width66 ft (20.1 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2021)
Projected traffic11,334 by 2041
Trucks1%
Lanes on structure2
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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pasadena Ave over ST RTE 110 & Arroyo Seco built?

It was built in 1940, making it 85 years old in 2025.

What condition is Pasadena Ave over ST RTE 110 & Arroyo Seco 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 June 2023.

How much traffic does Pasadena Ave over ST RTE 110 & Arroyo Seco carry?

About 15,500 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Pasadena Ave over ST RTE 110 & Arroyo Seco?

The structure is 181 ft (55.2 m) long with a longest span of 78 ft (23.8 m) and a deck 66 ft wide.

Who owns Pasadena Ave over ST RTE 110 & Arroyo Seco?

It is owned by the State Highway Agency.