US Bridges

San Gabriel Blvd over Rio Hondo

Good

Los Angeles County, California · 0.2MI W/O Rosemead Blvd · Structure no. 53C0421

Built
1982
43 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
334 ft
10 main spans
Daily traffic
25,203
2017 count
Owner
County
County Highway Agency

About this bridge

San Gabriel Blvd over Rio Hondo is a concrete continuous slab carrying San Gabriel Blvd over Rio Hondo in Los Angeles County, California. It was built in 1982, so it is 43 years old, younger 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 25,203 vehicles a day, roughly 2% of them trucks, projected to reach 30,243 by 2043. The structure is 334 ft (101.8 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSan Gabriel Blvd
CrossesRio Hondo
Location0.2MI W/O Rosemead Blvd
RouteCounty Highway 0L364
Coordinates34.02977, -118.07128
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.5 US tons
Inventory rating48.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length334 ft (101.8 m)
Longest span35 ft (10.7 m)
Deck width86 ft (26.3 m)
Roadway width69 ft (21.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,203 (2017)
Projected traffic30,243 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 San Gabriel Blvd over Rio Hondo built?

It was built in 1982, making it 43 years old in 2025.

What condition is San Gabriel Blvd over Rio Hondo 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 San Gabriel Blvd over Rio Hondo carry?

About 25,203 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is San Gabriel Blvd over Rio Hondo?

The structure is 334 ft (101.8 m) long with a longest span of 35 ft (10.7 m) and a deck 86 ft wide.

Who owns San Gabriel Blvd over Rio Hondo?

It is owned by the County Highway Agency.