Structure N02004443MUNNBI · Nantucket County, MA

HWY Massasoit RD over Water Long Pond

Carries HWY Massasoit RD over Water Long Pond, .3 Mi S Of Madaket RD.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
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 FT62 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

62 ft end to end, longest span 7 ft. 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 multi-beam bridge.

Built198145 years old
Length61.7 ft18.8 m
Daily traffic517counted 2023
Last inspectedMay 2023every 24 months

Location

StateMassachusetts
CountyNantucket
Location.3 Mi S Of Madaket RD
CarriesHWY Massasoit RD
CrossesWater Long Pond
Coordinates41.27219, -70.18557

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length61.7 ft (18.8 m)
Max Span7.2 ft (2.2 m)
Deck Width11.8 ft (3.6 m)
Deck Area67.7 sq m
Main Spans8
Year Built1981

Traffic

Avg Daily Traffic517 (2023)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure NumberN02004443MUNNBI

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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