Structure D05040B2CDOTNBI · Norfolk County, MA

I 95 Nb/st128 NB over St135 West ST

Carries I 95 Nb/st128 NB over St135 West ST, I 95 At ST 135.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT55 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

55 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.

Built201412 years old
Length55.4 ft16.9 m
Daily traffic70,136counted 2022
Last inspectedDecember 2023every 24 months

Location

StateMassachusetts
CountyNorfolk
LocationI 95 At ST 135
CarriesI 95 Nb/st128 NB
CrossesSt135 West ST
Coordinates42.26411, -71.20542

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length55.4 ft (16.9 m)
Max Span55.4 ft (16.9 m)
Deck Width80.1 ft (24.4 m)
Deck Area412.4 sq m
Main Spans1
Year Built2014

Traffic

Avg Daily Traffic70,136 (2022)
Truck Traffic6%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberD05040B2CDOTNBI

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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