Structure T010123WFDOTNBI · Bristol County, MA

St138 Weir ST over Water Mill River

Carries St138 Weir ST over Water Mill River, .1 Mi S Of US 44.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

41 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 tee-beam bridge.

Built194779 years old
Length41.0 ft12.5 m
Daily traffic16,422counted 2023
Last inspectedJuly 2023every 12 months

Location

StateMassachusetts
CountyBristol
Location.1 Mi S Of US 44
CarriesSt138 Weir ST
CrossesWater Mill River
Coordinates41.90012, -71.09228

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length41.0 ft (12.5 m)
Max Span35.1 ft (10.7 m)
Deck Width60.7 ft (18.5 m)
Deck Area231.2 sq m
Main Spans1
Year Built1947

Traffic

Avg Daily Traffic16,422 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure NumberT010123WFDOTNBI

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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