US Bridges

W120-N5 Connector over UP RR

Poor

San Joaquin County, California · 10-SJ-120-R0.76 · Structure no. 29 0291F

Built
1980
45 years old
Condition
Poor
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
867 ft
7 main spans
Daily traffic
19,750
2015 count
Owner
State
State Highway Agency

About this bridge

W120-N5 Connector over UP RR is a concrete continuous box beam or girders - multiple carrying W120-N5 Connector over UP RR in San Joaquin County, California. It was built in 1980, so it is 45 years old, younger 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 19,750 vehicles a day, roughly 18% of them trucks, projected to reach 26,018 by 2043. The structure is 867 ft (264.3 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesW120-N5 Connector
CrossesUP RR
Location10-SJ-120-R0.76
RouteState Highway 120
CountySan Joaquin County
StateCalifornia
Coordinates37.78987, -121.30047
Functional classRural Principal Arterial - Other

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length867 ft (264.3 m)
Longest span136 ft (41.5 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,750 (2015)
Projected traffic26,018 by 2043
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W120-N5 Connector over UP RR built?

It was built in 1980, making it 45 years old in 2025.

What condition is W120-N5 Connector over 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 May 2023.

How much traffic does W120-N5 Connector over UP RR carry?

About 19,750 vehicles per day (2015 count), of which roughly 18% are trucks.

How long is W120-N5 Connector over UP RR?

The structure is 867 ft (264.3 m) long with a longest span of 136 ft (41.5 m) and a deck 30 ft wide.

Who owns W120-N5 Connector over UP RR?

It is owned by the State Highway Agency.