US Bridges

Grand Ave EB over Caltrain UPRR Industrial

Fair

San Mateo County, California · 0.1 MI E of US 101 · Structure no. 35C0148R

Built
1984
41 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
506 ft
4 main spans
Daily traffic
6,009
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grand Ave EB over Caltrain UPRR Industrial is a steel continuous box beam or girders - multiple carrying Grand Ave EB over Caltrain UPRR Industrial in San Mateo County, California. It was built in 1984, so it is 41 years old, younger 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 6,009 vehicles a day, roughly 10% of them trucks, projected to reach 9,814 by 2041. The structure is 506 ft (154.2 m) long and 54 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesGrand Ave EB
CrossesCaltrain UPRR Industrial
Location0.1 MI E of US 101
RouteCity Street 0
CountySan Mateo County
StateCalifornia
Coordinates37.65529, -122.40582
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating20 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length506 ft (154.2 m)
Longest span158 ft (48.2 m)
Deck width54 ft (16.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,009 (2010)
Projected traffic9,814 by 2041
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed3.1 mi (5 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 Grand Ave EB over Caltrain UPRR Industrial built?

It was built in 1984, making it 41 years old in 2025.

What condition is Grand Ave EB over Caltrain UPRR Industrial 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 April 2023.

How much traffic does Grand Ave EB over Caltrain UPRR Industrial carry?

About 6,009 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Grand Ave EB over Caltrain UPRR Industrial?

The structure is 506 ft (154.2 m) long with a longest span of 158 ft (48.2 m) and a deck 54 ft wide.

Who owns Grand Ave EB over Caltrain UPRR Industrial?

It is owned by the City or Municipal Highway Agency.