Structure 28C0460 · Contra Costa County, CA

Richmond Parkway over San Pablo Creek

Carries Richmond Parkway over San Pablo Creek, At Parr BLVD.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

105 ft end to end, longest span 35 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.

Built1989rebuilt 1994
Length104.7 ft31.9 m
Daily traffic32,244counted 2015
Last inspectedSeptember 2024every 48 months

Location

StateCalifornia
CountyContra Costa
LocationAt Parr BLVD
CarriesRichmond Parkway
CrossesSan Pablo Creek
Coordinates37.96655, -122.37356

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length104.7 ft (31.9 m)
Max Span35.1 ft (10.7 m)
Deck Width130.6 ft (39.8 m)
Deck Area1269.6 sq m
Main Spans3
Year Built1989 (reconstructed 1994)

Traffic

Avg Daily Traffic32,244 (2015)
Truck Traffic5%
Lanes On Bridge5

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number28C0460

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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