Structure N2400448UDOTNBI · Plymouth County, MA

ST 3 NB over Water North River

Carries ST 3 NB over Water North River, At Norwell Pembroke Tl.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT196 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 6/9Substructure 4/9 · sets the rating

196 ft end to end, longest span 67 ft: about 3 semi-trucks nose to tail. 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 multi-beam bridge.

Built196165 years old
Length195.9 ft59.7 m
Daily traffic43,207counted 2024
Last inspectedMay 2024every 12 months

Location

StateMassachusetts
CountyPlymouth
LocationAt Norwell Pembroke Tl
CarriesST 3 NB
CrossesWater North River
Coordinates42.11620, -70.77810

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length195.9 ft (59.7 m)
Max Span66.9 ft (20.4 m)
Deck Width44.3 ft (13.5 m)
Deck Area806.0 sq m
Main Spans3
Year Built1961

Traffic

Avg Daily Traffic43,207 (2024)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberN2400448UDOTNBI

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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