US Bridges

Beck Ave over Alonzo Drain

Fair

Solano County, California · S/O Barnhart Road · Structure no. 23C0108

Built
1985
40 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
8,980
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Beck Ave over Alonzo Drain is a concrete continuous slab carrying Beck Ave over Alonzo Drain in Solano County, California. It was built in 1985, so it is 40 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 8,980 vehicles a day, roughly 8% of them trucks, projected to reach 4,605 by 2043. The structure is 102 ft (31.1 m) long and 90 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesBeck Ave
CrossesAlonzo Drain
LocationS/O Barnhart Road
RouteCity Street 0
CountySolano County
StateCalifornia
Coordinates38.23969, -122.06615
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length102 ft (31.1 m)
Longest span34 ft (10.4 m)
Deck width90 ft (27.5 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,980 (2015)
Projected traffic4,605 by 2043
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Beck Ave over Alonzo Drain built?

It was built in 1985, making it 40 years old in 2025.

What condition is Beck Ave over Alonzo Drain 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 December 2023.

How much traffic does Beck Ave over Alonzo Drain carry?

About 8,980 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Beck Ave over Alonzo Drain?

The structure is 102 ft (31.1 m) long with a longest span of 34 ft (10.4 m) and a deck 90 ft wide.

Who owns Beck Ave over Alonzo Drain?

It is owned by the City or Municipal Highway Agency.