Structure F040031KUDOTNBI · Worcester County, MA

ST 31 Westmnstr RD over Water Phillips Brook

Carries ST 31 Westmnstr RD over Water Phillips Brook, .1 Mi W Of St-12.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 6/9 · sets the rating

57 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.

Built1947rebuilt 2020
Length57.4 ft17.5 m
Daily traffic11,800counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateMassachusetts
CountyWorcester
Location.1 Mi W Of St-12
CarriesST 31 Westmnstr RD
CrossesWater Phillips Brook
Coordinates42.57453, -71.83717

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length57.4 ft (17.5 m)
Max Span56.1 ft (17.1 m)
Deck Width54.5 ft (16.6 m)
Deck Area290.5 sq m
Main Spans1
Year Built1947 (reconstructed 2020)

Traffic

Avg Daily Traffic11,800 (2023)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure NumberF040031KUDOTNBI

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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