US Bridges

Route 605 NB over Lacmta & BNSF RY

Good

Los Angeles County, California · 07-LA-605-25.55-IRW · Structure no. 53 1981R

Built
1970
55 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
305 ft
3 main spans
Daily traffic
10,000
2022 count
Owner
State
State Highway Agency

About this bridge

Route 605 NB over Lacmta & BNSF RY is a concrete continuous box beam or girders - multiple carrying Route 605 NB over Lacmta & BNSF RY in Los Angeles County, California. It was built in 1970, so it is 55 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 10,000 vehicles a day, roughly 7% of them trucks, projected to reach 11,000 by 2045. The structure is 305 ft (93 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRoute 605 NB
CrossesLacmta & BNSF RY
Location07-LA-605-25.55-IRW
RouteInterstate 605
Coordinates34.13207, -117.95864
Functional classUrban Principal Arterial - Interstate

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating36.4 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length305 ft (93 m)
Longest span133 ft (40.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2022)
Projected traffic11,000 by 2045
Trucks7%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Route 605 NB over Lacmta & BNSF RY built?

It was built in 1970, making it 55 years old in 2025.

What condition is Route 605 NB over Lacmta & BNSF RY 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 2024.

How much traffic does Route 605 NB over Lacmta & BNSF RY carry?

About 10,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Route 605 NB over Lacmta & BNSF RY?

The structure is 305 ft (93 m) long with a longest span of 133 ft (40.5 m) and a deck 26 ft wide.

Who owns Route 605 NB over Lacmta & BNSF RY?

It is owned by the State Highway Agency.