US Bridges

Gorge RD over Las Flores Crk

Poor

Los Angeles County, California · 100FT E/O Las Flores C RD · Structure no. 53C0999

Built
1945
80 years old, rebuilt 1994
Condition
Poor
inspected April 2023
Type
Girder and Floorbeam System
Steel
Length
39 ft
1 main span
Daily traffic
102
2017 count
Owner
County
County Highway Agency

About this bridge

Gorge RD over Las Flores Crk is a steel girder and floorbeam system carrying Gorge RD over Las Flores Crk in Los Angeles County, California. It was built in 1945 and reconstructed in 1994, so it is 80 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 102 vehicles a day, projected to reach 102 by 2041. The structure is 39 ft (12 m) long and 13 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesGorge RD
CrossesLas Flores Crk
Location100FT E/O Las Flores C RD
RouteCounty Highway 0
Coordinates34.05246, -118.63832
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110 US tons
Inventory rating67.9 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length39 ft (12 m)
Longest span35 ft (10.7 m)
Deck width13 ft (3.9 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102 (2017)
Projected traffic102 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$181,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gorge RD over Las Flores Crk built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1994.

What condition is Gorge RD over Las Flores Crk in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Gorge RD over Las Flores Crk carry?

About 102 vehicles per day (2017 count).

How long is Gorge RD over Las Flores Crk?

The structure is 39 ft (12 m) long with a longest span of 35 ft (10.7 m) and a deck 13 ft wide.

Who owns Gorge RD over Las Flores Crk?

It is owned by the County Highway Agency.