Structure M22020BHJDOTNBI · Worcester County, MA

St146 Wor-pvd Tpk over HWY W Main ST

Carries St146 Wor-pvd Tpk over HWY W Main ST, .3mi. Wst. Of Milbury Ctr.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT80 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

80 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.

Built20206 years old
Length79.7 ft24.3 m
Daily traffic48,300counted 2021
Last inspectedJanuary 2025every 24 months

Location

StateMassachusetts
CountyWorcester
Location.3mi. Wst. Of Milbury Ctr
CarriesSt146 Wor-pvd Tpk
CrossesHWY W Main ST
Coordinates42.18761, -71.76650

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length79.7 ft (24.3 m)
Max Span74.1 ft (22.6 m)
Deck Width91.9 ft (28 m)
Deck Area680.4 sq m
Main Spans1
Year Built2020

Traffic

Avg Daily Traffic48,300 (2021)
Truck Traffic15%
Lanes On Bridge6
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberM22020BHJDOTNBI

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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