Structure 33 0242 · Alameda County, CA

Interstate 880 over Scott Creek

Carries Interstate 880 over Scott Creek, 04-ala-880-r0.26-fmt.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT50 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 50 ft across with 4 openings. 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, so those are drawn as typical for a culvert.

Built1952rebuilt 2003
Length50.2 ft15.3 m
Daily traffic162,000counted 2019
Last inspectedApril 2021every 48 months

Location

StateCalifornia
CountyAlameda
Location04-ala-880-r0.26-fmt
CarriesInterstate 880
CrossesScott Creek
Coordinates37.45912, -121.92384

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length50.2 ft (15.3 m)
Max Span12.1 ft (3.7 m)
Deck Width220.5 ft (67.2 m)
Deck Area1028.2 sq m
Main Spans4
Year Built1952 (reconstructed 2003)

Traffic

Avg Daily Traffic162,000 (2019)
Truck Traffic10%
Lanes On Bridge12

Inspection & Ownership

Last InspectionApril 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number33 0242

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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