Structure R050043FQDOT634 · Suffolk County, MA

ST 1 A/vfw PKWY over Rr Mbta/bmrr

Carries ST 1 A/vfw PKWY over Rr Mbta/bmrr, .32 Km N Jct Sr1a&145.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT138 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

138 ft end to end, longest span 61 ft. Lengths and the semi-truck 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 box-beam bridge.

Built1932rebuilt 2003
Length138.1 ft42.1 m
Daily traffic47,457counted 2019
Last inspectedOctober 2023every 24 months

Location

StateMassachusetts
CountySuffolk
Location.32 Km N Jct Sr1a&145
CarriesST 1 A/vfw PKWY
CrossesRr Mbta/bmrr
Coordinates42.40963, -71.00028

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length138.1 ft (42.1 m)
Max Span61.4 ft (18.7 m)
Deck Width87.6 ft (26.7 m)
Deck Area1124.1 sq m
Main Spans3
Year Built1932 (reconstructed 2003)

Traffic

Avg Daily Traffic47,457 (2019)
Truck Traffic8%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberR050043FQDOT634

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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