US Bridges

State Route 118 over Alamos Canyon RD

Good

Ventura County, California · 07-VEN-118-R21.86 · Structure no. 52 0355R

Built
1976
49 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
149 ft
2 main spans
Daily traffic
41,500
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 118 over Alamos Canyon RD is a concrete continuous box beam or girders - multiple carrying State Route 118 over Alamos Canyon RD in Ventura County, California. It was built in 1976, so it is 49 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 41,500 vehicles a day, roughly 11% of them trucks, projected to reach 52,029 by 2047. The structure is 149 ft (45.3 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 118
CrossesAlamos Canyon RD
Location07-VEN-118-R21.86
RouteState Highway 118
Coordinates34.2908, -118.81064
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating46.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length149 ft (45.3 m)
Longest span74 ft (22.7 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,500 (2019)
Projected traffic52,029 by 2047
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 118 over Alamos Canyon RD built?

It was built in 1976, making it 49 years old in 2025.

What condition is State Route 118 over Alamos Canyon RD 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 January 2025.

How much traffic does State Route 118 over Alamos Canyon RD carry?

About 41,500 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is State Route 118 over Alamos Canyon RD?

The structure is 149 ft (45.3 m) long with a longest span of 74 ft (22.7 m) and a deck 42 ft wide.

Who owns State Route 118 over Alamos Canyon RD?

It is owned by the State Highway Agency.