US Bridges

Tracy Boulevard over Grant Line Canal

Fair

San Joaquin County, California · 3 MI N of I 205 · Structure no. 29C0022

Built
1959
66 years old
Condition
Fair
inspected February 2025
Type
Movable - Bascule
Steel
Length
471 ft
1 main span
Daily traffic
4,513
2017 count
Owner
County
County Highway Agency

About this bridge

Tracy Boulevard over Grant Line Canal is a steel movable - bascule carrying Tracy Boulevard over Grant Line Canal in San Joaquin County, California. It was built in 1959, so it is 66 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 4,513 vehicles a day, roughly 10% of them trucks, projected to reach 8,970 by 2045. The structure is 471 ft (143.6 m) long and 31 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

Location

Open in Google Maps
CarriesTracy Boulevard
CrossesGrant Line Canal
Location3 MI N of I 205
RouteCounty Highway 0
CountySan Joaquin County
StateCalifornia
Coordinates37.81903, -121.44967
Functional classRural Major Collector

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.1 US tons
Inventory rating22.2 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+12 approach)
Design loadHS 20
Structure length471 ft (143.6 m)
Longest span122 ft (37.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,513 (2017)
Projected traffic8,970 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible 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 Tracy Boulevard over Grant Line Canal built?

It was built in 1959, making it 66 years old in 2025.

What condition is Tracy Boulevard over Grant Line Canal 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 February 2025.

How much traffic does Tracy Boulevard over Grant Line Canal carry?

About 4,513 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is Tracy Boulevard over Grant Line Canal?

The structure is 471 ft (143.6 m) long with a longest span of 122 ft (37.3 m) and a deck 31 ft wide.

Who owns Tracy Boulevard over Grant Line Canal?

It is owned by the County Highway Agency.