Structure 23 0131L · Solano County, CA

Interstate 780 EB over West 7th Street

Carries Interstate 780 EB over West 7th Street, 04-sol-780-2.96-ben.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT124 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

124 ft end to end, longest span 63 ft. Lengths and the semi-truck 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 tee-beam bridge.

Built1962rebuilt 1977
Length124.3 ft37.9 m
Daily traffic23,500counted 2009
Last inspectedDecember 2023every 24 months

Location

StateCalifornia
CountySolano
Location04-sol-780-2.96-ben
CarriesInterstate 780 EB
CrossesWest 7th Street
Coordinates38.06460, -122.16429

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length124.3 ft (37.9 m)
Max Span63.0 ft (19.2 m)
Deck Width57.1 ft (17.4 m)
Deck Area659.5 sq m
Main Spans3
Year Built1962 (reconstructed 1977)

Traffic

Avg Daily Traffic23,500 (2009)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number23 0131L

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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