Structure R0501739BDOTNBI · Suffolk County, MA

ST 1 A/lee Brbnk over St145 Revere Bch PKWY

Carries ST 1 A/lee Brbnk over St145 Revere Bch PKWY, .5 Mi SW Of Jet SR 60&1a.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT136 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

136 ft end to end, longest span 74 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 multi-beam bridge.

Built1934rebuilt 1975
Length135.8 ft41.4 m
Daily traffic55,630counted 2016
Last inspectedMarch 2023every 12 months

Location

StateMassachusetts
CountySuffolk
Location.5 Mi SW Of Jet SR 60&1a
CarriesST 1 A/lee Brbnk
CrossesSt145 Revere Bch PKWY
Coordinates42.40436, -71.00287

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length135.8 ft (41.4 m)
Max Span74.1 ft (22.6 m)
Deck Width79.7 ft (24.3 m)
Deck Area1006.0 sq m
Main Spans2
Year Built1934 (reconstructed 1975)

Traffic

Avg Daily Traffic55,630 (2016)
Truck Traffic10%
Lanes On Bridge4
Lanes Under Bridge8

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberR0501739BDOTNBI

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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