Structure B162614VVMBTNBI · Suffolk County, MA

HWY Savin Hll Av over Tr Red Line

Carries HWY Savin Hll Av over Tr Red Line, 0.2m E Dorchester AVE.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT83 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

83 ft end to end, longest span 41 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 multi-beam bridge.

Built1925rebuilt 1967
Length82.7 ft25.2 m
Daily traffic6,700counted 2013
Last inspectedNovember 2022every 12 months

Location

StateMassachusetts
CountySuffolk
Location0.2m E Dorchester AVE
CarriesHWY Savin Hll Av
CrossesTr Red Line
Coordinates42.31133, -71.05317

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length82.7 ft (25.2 m)
Max Span41.0 ft (12.5 m)
Deck Width52.2 ft (15.9 m)
Deck Area400.7 sq m
Main Spans2
Year Built1925 (reconstructed 1967)

Traffic

Avg Daily Traffic6,700 (2013)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 12 months
OwnerOther State Agencies
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberB162614VVMBTNBI

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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