Structure N1400701GMUNNBI · Berkshire County, MA

HWY Brown ST over Water Hoosic River

Carries HWY Brown ST over Water Hoosic River, At Int. With River ST.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 2 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating2/9 · Critical
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT84 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 2/9 · sets the ratingSubstructure 6/9

84 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.

Built195274 years old
Length84.0 ft25.6 m
Daily traffic1,138counted 2017
Last inspectedSeptember 2023every 12 months

Location

StateMassachusetts
CountyBerkshire
LocationAt Int. With River ST
CarriesHWY Brown ST
CrossesWater Hoosic River
Coordinates42.70326, -73.12046

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length84.0 ft (25.6 m)
Max Span82.3 ft (25.1 m)
Deck Width50.9 ft (15.5 m)
Deck Area396.8 sq m
Main Spans1
Year Built1952

Traffic

Avg Daily Traffic1,138 (2017)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberN1400701GMUNNBI

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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