Structure 23C0108 · Solano County, CA

Beck AVE over Alonzo Drain

Carries Beck AVE over Alonzo Drain, S/o Barnhart Road.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT102 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

102 ft end to end, longest span 34 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built198541 years old
Length102.0 ft31.1 m
Daily traffic8,980counted 2015
Last inspectedDecember 2023every 24 months

Location

StateCalifornia
CountySolano
LocationS/o Barnhart Road
CarriesBeck AVE
CrossesAlonzo Drain
Coordinates38.23969, -122.06615

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length102.0 ft (31.1 m)
Max Span34.1 ft (10.4 m)
Deck Width90.2 ft (27.5 m)
Deck Area855.2 sq m
Main Spans3
Year Built1985

Traffic

Avg Daily Traffic8,980 (2015)
Truck Traffic8%
Lanes On Bridge5

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number23C0108

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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