Structure B15001206DOTNBI · Worcester County, MA

St117 Main ST over Water Still River

Carries St117 Main ST over Water Still River, .1 Mi E Lancaster Twn LN.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck7/9 · Good
Superstructure5/9 · Fair
Substructuresets the rating3/9 · Serious
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9Substructure 3/9 · sets the rating

104 ft end to end, longest span 40 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.

Built1937rebuilt 1952
Length104.0 ft31.7 m
Daily traffic16,803counted 2023
Last inspectedJuly 2023every 6 months

Location

StateMassachusetts
CountyWorcester
Location.1 Mi E Lancaster Twn LN
CarriesSt117 Main ST
CrossesWater Still River
Coordinates42.45589, -71.64557

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length104.0 ft (31.7 m)
Max Span40.0 ft (12.2 m)
Deck Width33.5 ft (10.2 m)
Deck Area323.3 sq m
Main Spans3
Year Built1937 (reconstructed 1952)

Traffic

Avg Daily Traffic16,803 (2023)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 6 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure NumberB15001206DOTNBI

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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