US Bridges

W120-S5 Connector over San Joaquin River 03

Fair

San Joaquin County, California · 10-SJ-005-R14.16 · Structure no. 29 0016F

Built
1947
78 years old
Condition
Fair
inspected May 2023
Type
Movable - Bascule
Steel
Length
583 ft
1 main span
Daily traffic
37,500
2009 count
Owner
State
State Highway Agency

About this bridge

W120-S5 Connector over San Joaquin River 03 is a steel movable - bascule carrying W120-S5 Connector over San Joaquin River 03 in San Joaquin 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 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 37,500 vehicles a day, roughly 9% of them trucks, projected to reach 47,514 by 2045. The structure is 583 ft (177.7 m) long and 31 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesW120-S5 Connector
CrossesSan Joaquin River 03
Location10-SJ-005-R14.16
RouteState Highway 5
CountySan Joaquin County
StateCalifornia
Coordinates37.78505, -121.30737
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating32.2 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadH 20
Structure length583 ft (177.7 m)
Longest span130 ft (39.6 m)
Deck width31 ft (9.6 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic37,500 (2009)
Projected traffic47,514 by 2045
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was W120-S5 Connector over San Joaquin River 03 built?

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

What condition is W120-S5 Connector over San Joaquin River 03 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 May 2023.

How much traffic does W120-S5 Connector over San Joaquin River 03 carry?

About 37,500 vehicles per day (2009 count), of which roughly 9% are trucks.

How long is W120-S5 Connector over San Joaquin River 03?

The structure is 583 ft (177.7 m) long with a longest span of 130 ft (39.6 m) and a deck 31 ft wide.

Who owns W120-S5 Connector over San Joaquin River 03?

It is owned by the State Highway Agency.