Structure 28 0409F · Contra Costa County, CA

S160-e4 Connector over E4-n160 Connect Uprr

Carries S160-e4 Connector over E4-n160 Connect Uprr, 04-cc-160-l0.41r-ant.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,371 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,371 ft end to end, longest span 220 ft: about 3.8 football fields. 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 box-beam bridge.

Built201610 years old
Length1371.1 ft417.9 m
Daily traffic13,600counted 2018
Last inspectedJuly 2024every 24 months

Location

StateCalifornia
CountyContra Costa
Location04-cc-160-l0.41r-ant
CarriesS160-e4 Connector
CrossesE4-n160 Connect Uprr
Coordinates37.99161, -121.75664

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length1371.1 ft (417.9 m)
Max Span220.1 ft (67.1 m)
Deck Width46.9 ft (14.3 m)
Deck Area5976.0 sq m
Main Spans7
Year Built2016

Traffic

Avg Daily Traffic13,600 (2018)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number28 0409F

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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