US Bridges

SR 1 NB over Calleguas Creek

Fair

Ventura County, California · 07-VEN-001-9.87 · Structure no. 52 0010R

Built
1957
68 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
240 ft
8 main spans
Daily traffic
4,300
2020 count
Owner
State
State Highway Agency

About this bridge

SR 1 NB over Calleguas Creek is a concrete continuous slab carrying SR 1 NB over Calleguas Creek in Ventura County, California. It was built in 1957, so it is 68 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,300 vehicles a day, roughly 4% of them trucks, projected to reach 5,500 by 2042. The structure is 240 ft (73 m) long and 33 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesSR 1 NB
CrossesCalleguas Creek
Location07-VEN-001-9.87
RouteState Highway 1
CountyVentura County
StateCalifornia
Coordinates34.11251, -119.08171
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadH 20
Structure length240 ft (73 m)
Longest span30 ft (9.1 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2020)
Projected traffic5,500 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.9 mi (69 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 1 NB over Calleguas Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR 1 NB over Calleguas Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does SR 1 NB over Calleguas Creek carry?

About 4,300 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SR 1 NB over Calleguas Creek?

The structure is 240 ft (73 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.

Who owns SR 1 NB over Calleguas Creek?

It is owned by the State Highway Agency.