Structure 33 0616R · Alameda County, CA

Interstate 880 NB over Adeline Bartd Union 5th

Carries Interstate 880 NB over Adeline Bartd Union 5th, 04-ala-880-r32.20-oak.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,622 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

3,622 ft end to end, longest span 175 ft: about 10 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.

Built199828 years old
Length3622.0 ft1,104 m
Daily traffic63,000counted 2012
Last inspectedMarch 2023every 24 months

Location

StateCalifornia
CountyAlameda
Location04-ala-880-r32.20-oak
CarriesInterstate 880 NB
CrossesAdeline Bartd Union 5th
Coordinates37.80222, -122.28397

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length3622.0 ft (1,104 m)
Max Span174.9 ft (53.3 m)
Deck Width71.5 ft (21.8 m)
Deck Area24067.2 sq m
Main Spans25
Year Built1998

Traffic

Avg Daily Traffic63,000 (2012)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge11

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33 0616R

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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