US Bridges

G Street over Mare Island

Good

Solano County, California · 1 Mile S. of HWY 37 · Structure no. 23C0290

Built
2016
9 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete
Length
52 ft
2 main spans
Daily traffic
2,935
2008 count
Owner
City
City or Municipal Highway Agency

About this bridge

G Street over Mare Island is a concrete slab carrying G Street over Mare Island in Solano County, California. It was built in 2016, so it is 9 years old, younger 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 2,935 vehicles a day, roughly 10% of them trucks, projected to reach 3,582 by 2042. The structure is 52 ft (15.8 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesG Street
CrossesMare Island
Location1 Mile S. of HWY 37
RouteCity Street 0
Coordinates38.10957, -122.27805
Functional classUrban Minor 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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length52 ft (15.8 m)
Longest span40 ft (12.1 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,935 (2008)
Projected traffic3,582 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mare Island built?

It was built in 2016, making it 9 years old in 2025.

What condition is G Street over Mare Island 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 2024.

How much traffic does G Street over Mare Island carry?

About 2,935 vehicles per day (2008 count), of which roughly 10% are trucks.

How long is G Street over Mare Island?

The structure is 52 ft (15.8 m) long with a longest span of 40 ft (12.1 m) and a deck 40 ft wide.

Who owns G Street over Mare Island?

It is owned by the City or Municipal Highway Agency.