Structure F020553VADOTNBI · Bristol County, MA

ST 79 SW Ramp over Rr Macrr

Carries ST 79 SW Ramp over Rr Macrr, Mp Qnf 9.42.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT48 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

48 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.

Built197452 years old
Length47.9 ft14.6 m
Daily traffic7,286counted 2024
Last inspectedJanuary 2024every 24 months

Location

StateMassachusetts
CountyBristol
LocationMp Qnf 9.42
CarriesST 79 SW Ramp
CrossesRr Macrr
Coordinates41.72786, -71.13994

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length47.9 ft (14.6 m)
Max Span40.0 ft (12.2 m)
Deck Width57.1 ft (17.4 m)
Deck Area254.0 sq m
Main Spans1
Year Built1974

Traffic

Avg Daily Traffic7,286 (2024)
Truck Traffic4%
Lanes On 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 NumberF020553VADOTNBI

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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