US Bridges

N 1st Avenue over BNSF RY UP RR AMTRAK

Fair

San Bernardino County, California · 0.2 MI N Main St. · Structure no. 54C0088

Built
1930
95 years old
Condition
Fair
inspected November 2024
Type
Truss - Thru
Steel
Length
1,165 ft
3 main spans
Daily traffic
14,000
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

N 1st Avenue over BNSF RY UP RR AMTRAK is a steel truss - thru carrying N 1st Avenue over BNSF RY UP RR AMTRAK in San Bernardino County, California. It was built in 1930, 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 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 14,000 vehicles a day, roughly 5% of them trucks, projected to reach 21,117 by 2044. The structure is 1,165 ft (355.1 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN 1st Avenue
CrossesBNSF RY UP RR AMTRAK
Location0.2 MI N Main St.
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.90216, -117.02713
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+26 approach)
Design loadH 15
Structure length1,165 ft (355.1 m)
Longest span173 ft (52.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck15 ft (4.4 m)

Traffic and service

Average daily traffic14,000 (2016)
Projected traffic21,117 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was N 1st Avenue over BNSF RY UP RR AMTRAK built?

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

What condition is N 1st Avenue over BNSF RY UP RR AMTRAK 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 November 2024.

How much traffic does N 1st Avenue over BNSF RY UP RR AMTRAK carry?

About 14,000 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is N 1st Avenue over BNSF RY UP RR AMTRAK?

The structure is 1,165 ft (355.1 m) long with a longest span of 173 ft (52.7 m) and a deck 24 ft wide.

Who owns N 1st Avenue over BNSF RY UP RR AMTRAK?

It is owned by the City or Municipal Highway Agency.