Structure W270030TDMUNNBI · Hampshire County, MA

HWY Easthmptn RD over Water N Br Manhan River

Carries HWY Easthmptn RD over Water N Br Manhan River, 2m N Rt66 Nr Northampton.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

46 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 multi-beam bridge.

Built193888 years old
Length45.6 ft13.9 m
Daily traffic905counted 2017
Last inspectedMarch 2023every 24 months

Location

StateMassachusetts
CountyHampshire
Location2m N Rt66 Nr Northampton
CarriesHWY Easthmptn RD
CrossesWater N Br Manhan River
Coordinates42.30939, -72.75877

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length45.6 ft (13.9 m)
Max Span42.0 ft (12.8 m)
Deck Width24.0 ft (7.3 m)
Deck Area101.5 sq m
Main Spans1
Year Built1938

Traffic

Avg Daily Traffic905 (2017)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure NumberW270030TDMUNNBI

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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