US Bridges

State Route 4 EB over Airport Way

Fair

San Joaquin County, California · 10-SJ-004-R17.56-STKN · Structure no. 29 0300R

Built
1988
37 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
162 ft
1 main span
Daily traffic
44,500
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 4 EB over Airport Way is a prestressed concrete box beam or girders - multiple carrying State Route 4 EB over Airport Way in San Joaquin County, California. It was built in 1988, so it is 37 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 44,500 vehicles a day, roughly 11% of them trucks, projected to reach 68,846 by 2041. The structure is 162 ft (49.4 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState Route 4 EB
CrossesAirport Way
Location10-SJ-004-R17.56-STKN
RouteState Highway 4
CountySan Joaquin County
StateCalifornia
Coordinates37.95257, -121.27382
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length162 ft (49.4 m)
Longest span157 ft (47.9 m)
Deck width54 ft (16.6 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,500 (2009)
Projected traffic68,846 by 2041
Trucks11%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 4 EB over Airport Way built?

It was built in 1988, making it 37 years old in 2025.

What condition is State Route 4 EB over Airport Way 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 June 2023.

How much traffic does State Route 4 EB over Airport Way carry?

About 44,500 vehicles per day (2009 count), of which roughly 11% are trucks.

How long is State Route 4 EB over Airport Way?

The structure is 162 ft (49.4 m) long with a longest span of 157 ft (47.9 m) and a deck 54 ft wide.

Who owns State Route 4 EB over Airport Way?

It is owned by the State Highway Agency.