Structure 28C0413 · Contra Costa County, CA

Lucille LN over Grayson Creek

Carries Lucille LN over Grayson Creek, 0.3 Mi S Taylor BLVD.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

29 ft end to end. 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.

Built197947 years old
Length28.9 ft8.8 m
Daily traffic120counted 2020
Last inspectedFebruary 2023every 48 months

Location

StateCalifornia
CountyContra Costa
Location0.3 Mi S Taylor BLVD
CarriesLucille LN
CrossesGrayson Creek
Coordinates37.95658, -122.07340

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length28.9 ft (8.8 m)
Max Span27.9 ft (8.5 m)
Deck Width50.5 ft (15.4 m)
Deck Area135.5 sq m
Main Spans1
Year Built1979

Traffic

Avg Daily Traffic120 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number28C0413

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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