Structure H090201V7DOTNBI · Worcester County, MA

I 495 SB over HWY Stow RD

Carries I 495 SB over HWY Stow RD, 3 Mi NE St-117.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT111 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

111 ft end to end, longest span 43 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.

Built196363 years old
Length110.9 ft33.8 m
Daily traffic45,362counted 2017
Last inspectedNovember 2024every 24 months

Location

StateMassachusetts
CountyWorcester
Location3 Mi NE St-117
CarriesI 495 SB
CrossesHWY Stow RD
Coordinates42.47085, -71.55857

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length110.9 ft (33.8 m)
Max Span42.7 ft (13 m)
Deck Width56.1 ft (17.1 m)
Deck Area578.0 sq m
Main Spans3
Year Built1963

Traffic

Avg Daily Traffic45,362 (2017)
Truck Traffic6%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberH090201V7DOTNBI

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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