Structure N190460MKMUNNBI · Hampshire County, MA

HWY Main ST Leed over Water S Channel Mill Riv

Carries HWY Main ST Leed over Water S Channel Mill Riv, 200 N Of Arch ST.

Overall conditionPoor

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

How ratings work
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT62 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 4/9 · sets the ratingSubstructure 5/9

62 ft end to end, longest span 26 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 deck arch.

Built1850176 years old
Length62.0 ft18.9 m
Daily traffic2,008counted 2005
Last inspectedSeptember 2024every 12 months

Location

StateMassachusetts
CountyHampshire
Location200 N Of Arch ST
CarriesHWY Main ST Leed
CrossesWater S Channel Mill Riv
Coordinates42.34876, -72.70046

Physical Characteristics

MaterialMasonry
DesignArch - Deck
Total Length62.0 ft (18.9 m)
Max Span25.9 ft (7.9 m)
Deck Width21.3 ft (6.5 m)
Deck Area122.8 sq m
Main Spans2
Year Built1850

Traffic

Avg Daily Traffic2,008 (2005)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure NumberN190460MKMUNNBI

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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