Structure S140071M0DOTNBI · Worcester County, MA

ST 9 Bstn-wrcstr over St140 Grafton ST

Carries ST 9 Bstn-wrcstr over St140 Grafton ST, ST 9/st 140.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT40 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 7/9

40 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 tee-beam bridge.

Built193294 years old
Length40.0 ft12.2 m
Daily traffic47,107counted 2024
Last inspectedJuly 2024every 4 months

Location

StateMassachusetts
CountyWorcester
LocationST 9/st 140
CarriesST 9 Bstn-wrcstr
CrossesSt140 Grafton ST
Coordinates42.27680, -71.71056

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length40.0 ft (12.2 m)
Max Span30.8 ft (9.4 m)
Deck Width74.1 ft (22.6 m)
Deck Area275.7 sq m
Main Spans1
Year Built1932

Traffic

Avg Daily Traffic47,107 (2024)
Truck Traffic6%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 4 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberS140071M0DOTNBI

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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