US Bridges

Evans Ave over Caltrain & UP RR

Poor

San Francisco County, California · Just S. of Cesar Chavez · Structure no. 34C0054

Built
1947
78 years old
Condition
Poor
inspected December 2023
Type
Tee Beam
Concrete Continuous
Length
106 ft
3 main spans
Daily traffic
30,000
2016 count
Owner
County
County Highway Agency

About this bridge

Evans Ave over Caltrain & UP RR is a concrete continuous tee beam carrying Evans Ave over Caltrain & UP RR in San Francisco County, California. It was built in 1947, so it is 78 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 30,000 vehicles a day, roughly 10% of them trucks, projected to reach 52,384 by 2043. The structure is 106 ft (32.3 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesEvans Ave
CrossesCaltrain & UP RR
LocationJust S. of Cesar Chavez
RouteCity Street 0
CountySan Francisco County
StateCalifornia
Coordinates37.74934, -122.39696
Functional classUrban Other Principal Arterial

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.4 US tons
Inventory rating21.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length106 ft (32.3 m)
Longest span54 ft (16.5 m)
Deck width80 ft (24.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,000 (2016)
Projected traffic52,384 by 2043
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$3 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Evans Ave over Caltrain & UP RR built?

It was built in 1947, making it 78 years old in 2025.

What condition is Evans Ave over Caltrain & UP RR 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 December 2023.

How much traffic does Evans Ave over Caltrain & UP RR carry?

About 30,000 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Evans Ave over Caltrain & UP RR?

The structure is 106 ft (32.3 m) long with a longest span of 54 ft (16.5 m) and a deck 80 ft wide.

Who owns Evans Ave over Caltrain & UP RR?

It is owned by the County Highway Agency.