US Bridges

State Route 113 over New Alamo Creek Channel

Good

Solano County, California · 04-SOL-113-11.58 · Structure no. 23 0076

Built
1964
61 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete Continuous
Length
85 ft
3 main spans
Daily traffic
4,100
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 113 over New Alamo Creek Channel is a concrete continuous slab carrying State Route 113 over New Alamo Creek Channel in Solano County, California. It was built in 1964, so it is 61 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 4,100 vehicles a day, roughly 7% of them trucks, projected to reach 6,605 by 2046. The structure is 85 ft (25.9 m) long and 34 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesState Route 113
CrossesNew Alamo Creek Channel
Location04-SOL-113-11.58
RouteState Highway 113
Coordinates38.3364, -121.8232
Functional classRural 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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span28 ft (8.5 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2020)
Projected traffic6,605 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 113 over New Alamo Creek Channel built?

It was built in 1964, making it 61 years old in 2025.

What condition is State Route 113 over New Alamo Creek Channel 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 November 2024.

How much traffic does State Route 113 over New Alamo Creek Channel carry?

About 4,100 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is State Route 113 over New Alamo Creek Channel?

The structure is 85 ft (25.9 m) long with a longest span of 28 ft (8.5 m) and a deck 34 ft wide.

Who owns State Route 113 over New Alamo Creek Channel?

It is owned by the State Highway Agency.