US Bridges

Third ST over UP RR AMTRAK Oxnard Bl

Good

Ventura County, California · 500 Ft North of W.4th ST · Structure no. 52C0307

Built
1987
38 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
664 ft
7 main spans
Daily traffic
5,500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Third ST over UP RR AMTRAK Oxnard Bl is a prestressed concrete continuous box beam or girders - multiple carrying Third ST over UP RR AMTRAK Oxnard Bl in Ventura County, California. It was built in 1987, so it is 38 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 5,500 vehicles a day, roughly 1% of them trucks, projected to reach 8,257 by 2044. The structure is 664 ft (202.4 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesThird ST
CrossesUP RR AMTRAK Oxnard Bl
Location500 Ft North of W.4th ST
RouteCity Street 0
Coordinates34.2003, -119.17752
Functional classUrban Local

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length664 ft (202.4 m)
Longest span105 ft (32 m)
Deck width73 ft (22.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2022)
Projected traffic8,257 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Third ST over UP RR AMTRAK Oxnard Bl built?

It was built in 1987, making it 38 years old in 2025.

What condition is Third ST over UP RR AMTRAK Oxnard Bl 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 August 2024.

How much traffic does Third ST over UP RR AMTRAK Oxnard Bl carry?

About 5,500 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Third ST over UP RR AMTRAK Oxnard Bl?

The structure is 664 ft (202.4 m) long with a longest span of 105 ft (32 m) and a deck 73 ft wide.

Who owns Third ST over UP RR AMTRAK Oxnard Bl?

It is owned by the City or Municipal Highway Agency.