Structure C0601421JDOT634 · Worcester County, MA

ST 31 New Spncr RD over Rr Csx

Carries ST 31 New Spncr RD over Rr Csx, 100ft S. Of Old Spencer R.

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 FT55 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

55 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.

Built1954rebuilt 2011
Length55.1 ft16.8 m
Daily traffic2,805counted 2011
Last inspectedJune 2022every 24 months

Location

StateMassachusetts
CountyWorcester
Location100ft S. Of Old Spencer R
CarriesST 31 New Spncr RD
CrossesRr Csx
Coordinates42.17429, -71.97784

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length55.1 ft (16.8 m)
Max Span51.5 ft (15.7 m)
Deck Width47.9 ft (14.6 m)
Deck Area245.3 sq m
Main Spans1
Year Built1954 (reconstructed 2011)

Traffic

Avg Daily Traffic2,805 (2011)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberC0601421JDOT634

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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