Structure L190072W6DOTNBI · Essex County, MA

I 95 Nb/st128 NB over HWY Summer ST

Carries I 95 Nb/st128 NB over HWY Summer ST, 0.5 Mi S Of Us-1.

Overall conditionFair

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

How ratings work
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT60 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 5/9 · sets the ratingSubstructure 6/9

60 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 rigid-frame bridge.

Built1940rebuilt 1960
Length60.0 ft18.3 m
Daily traffic55,400counted 2017
Last inspectedMay 2023every 24 months

Location

StateMassachusetts
CountyEssex
Location0.5 Mi S Of Us-1
CarriesI 95 Nb/st128 NB
CrossesHWY Summer ST
Coordinates42.51572, -71.01321

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length60.0 ft (18.3 m)
Max Span49.9 ft (15.2 m)
Deck Width67.3 ft (20.5 m)
Deck Area375.1 sq m
Main Spans1
Year Built1940 (reconstructed 1960)

Traffic

Avg Daily Traffic55,400 (2017)
Truck Traffic12%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberL190072W6DOTNBI

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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