Structure S330151MQDOTNBI · Worcester County, MA

St146 over Water Cold Spring Brook

Carries St146 over Water Cold Spring Brook, 0.4 Mi S Boston Rd-sutton.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

27 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.

Built193888 years old
Length26.9 ft8.2 m
Daily traffic44,195counted 2022
Last inspectedMarch 2024every 24 months

Location

StateMassachusetts
CountyWorcester
Location0.4 Mi S Boston Rd-sutton
CarriesSt146
CrossesWater Cold Spring Brook
Coordinates42.15775, -71.73186

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length26.9 ft (8.2 m)
Max Span20.0 ft (6.1 m)
Deck Width107.0 ft (32.6 m)
Deck Area267.3 sq m
Main Spans1
Year Built1938

Traffic

Avg Daily Traffic44,195 (2022)
Truck Traffic10%
Lanes On Bridge5

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure NumberS330151MQDOTNBI

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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