Structure G120590XHDOTNBI · Franklin County, MA

I 91 SB over ST 2 EB Rotary

Carries I 91 SB over ST 2 EB Rotary, Mm 43.0 On I-91 SB.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

94 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.

Built196561 years old
Length93.5 ft28.5 m
Daily traffic8,227counted 2024
Last inspectedJanuary 2024every 24 months

Location

StateMassachusetts
CountyFranklin
LocationMm 43.0 On I-91 SB
CarriesI 91 SB
CrossesST 2 EB Rotary
Coordinates42.58458, -72.62200

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length93.5 ft (28.5 m)
Max Span89.9 ft (27.4 m)
Deck Width44.3 ft (13.5 m)
Deck Area384.8 sq m
Main Spans1
Year Built1965

Traffic

Avg Daily Traffic8,227 (2024)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberG120590XHDOTNBI

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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