US Bridges

Paul Ave over Caltrain

Good

San Francisco County, California · 0.1MI W/O 3rd ST · Structure no. 34C0089

Built
1930
95 years old, rebuilt 2016
Condition
Good
inspected December 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
81 ft
2 main spans
Daily traffic
20,000
2013 count
Owner
Railroad
Railroad

About this bridge

Paul Ave over Caltrain is a prestressed concrete continuous box beam or girders - multiple carrying Paul Ave over Caltrain in San Francisco County, California. It was built in 1930 and reconstructed in 2016, so it is 95 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 20,000 vehicles a day, roughly 7% of them trucks, projected to reach 23,358 by 2043. The structure is 81 ft (24.6 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPaul Ave
CrossesCaltrain
Location0.1MI W/O 3rd ST
RouteCity Street 0
Coordinates37.72281, -122.39731
Functional classUrban Minor Arterial

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 inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length81 ft (24.6 m)
Longest span43 ft (13 m)
Deck width65 ft (19.8 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2013)
Projected traffic23,358 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byCounty 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 Paul Ave over Caltrain built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2016.

What condition is Paul Ave over Caltrain 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 December 2021.

How much traffic does Paul Ave over Caltrain carry?

About 20,000 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is Paul Ave over Caltrain?

The structure is 81 ft (24.6 m) long with a longest span of 43 ft (13 m) and a deck 65 ft wide.

Who owns Paul Ave over Caltrain?

It is owned by the Railroad and maintained by the County Highway Agency.