Structure G100170KTDOTNBI · Hampden County, MA

St189 Granby RD over Water Seymour Brook

Carries St189 Granby RD over Water Seymour Brook, At Water Street.

Overall conditionFair

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

How ratings work
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT31 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 5/9 · sets the ratingSubstructure 7/9

31 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 deck arch.

Built1904122 years old
Length30.8 ft9.4 m
Daily traffic2,068counted 2018
Last inspectedMarch 2024every 24 months

Location

StateMassachusetts
CountyHampden
LocationAt Water Street
CarriesSt189 Granby RD
CrossesWater Seymour Brook
Coordinates42.06454, -72.86080

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length30.8 ft (9.4 m)
Max Span30.8 ft (9.4 m)
Deck Width24.0 ft (7.3 m)
Deck Area68.6 sq m
Main Spans1
Year Built1904

Traffic

Avg Daily Traffic2,068 (2018)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure NumberG100170KTDOTNBI

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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