US Bridges

G Street over State Route 99 & Ramp

Good

Stanislaus County, California · 10-STA-099-R15.66-MOD · Structure no. 38 0088

Built
1963
62 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
239 ft
4 main spans
Daily traffic
14,300
2011 count
Owner
State
State Highway Agency

About this bridge

G Street over State Route 99 & Ramp is a concrete continuous box beam or girders - multiple carrying G Street over State Route 99 & Ramp in Stanislaus County, California. It was built in 1963, so it is 62 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,300 vehicles a day, roughly 4% of them trucks, projected to reach 23,133 by 2041. The structure is 239 ft (72.8 m) long and 66 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesG Street
CrossesState Route 99 & Ramp
Location10-STA-099-R15.66-MOD
RouteCity Street 0
Coordinates37.63408, -121.00136
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length239 ft (72.8 m)
Longest span71 ft (21.5 m)
Deck width66 ft (20.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,300 (2011)
Projected traffic23,133 by 2041
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was G Street over State Route 99 & Ramp built?

It was built in 1963, making it 62 years old in 2025.

What condition is G Street over State Route 99 & Ramp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does G Street over State Route 99 & Ramp carry?

About 14,300 vehicles per day (2011 count), of which roughly 4% are trucks.

How long is G Street over State Route 99 & Ramp?

The structure is 239 ft (72.8 m) long with a longest span of 71 ft (21.5 m) and a deck 66 ft wide.

Who owns G Street over State Route 99 & Ramp?

It is owned by the State Highway Agency.