Structure Q010015WJDOTNBI · Norfolk County, MA

ST 3 A over Water Fore River

Carries ST 3 A over Water Fore River, At Weymouth Twn Line.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
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
SEMI-TRUCK · 72 FT1,407 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

1,407 ft end to end: about 3.9 football fields. Lengths and the semi-truck 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 lift bridge (drawn closed).

Built20188 years old
Length1406.8 ft428.8 m
Daily traffic46,164counted 2024
Last inspectedOctober 2024every 24 months

Location

StateMassachusetts
CountyNorfolk
LocationAt Weymouth Twn Line
CarriesST 3 A
CrossesWater Fore River
Coordinates42.24459, -70.96720

Physical Characteristics

MaterialSteel
DesignMovable - Lift
Total Length1406.8 ft (428.8 m)
Max Span324.1 ft (98.8 m)
Deck Width73.8 ft (22.5 m)
Deck Area9,648 sq m
Main Spans1
Year Built2018

Traffic

Avg Daily Traffic46,164 (2024)
Truck Traffic2%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure NumberQ010015WJDOTNBI

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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