Structure B165069RRDOTNBI · Suffolk County, MA

I 93 Ramp Kk over Other Relief

Carries I 93 Ramp Kk over Other Relief, .8 Km N Of I90.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT76 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

76 ft end to end, longest span 24 ft. 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 slab bridge.

Built200323 years old
Length76.4 ft23.3 m
Daily traffic2,416counted 2022
Last inspectedDecember 2023every 24 months

Location

StateMassachusetts
CountySuffolk
Location.8 Km N Of I90
CarriesI 93 Ramp Kk
CrossesOther Relief
Coordinates42.34778, -71.05962

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length76.4 ft (23.3 m)
Max Span24.0 ft (7.3 m)
Deck Width32.2 ft (9.8 m)
Deck Area228.3 sq m
Main Spans3
Year Built2003

Traffic

Avg Daily Traffic2,416 (2022)
Truck Traffic6%
Lanes On Bridge1

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberB165069RRDOTNBI

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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