Structure 1297 · Windham County, CT

Route 101 over Quinebaug River

Carries Route 101 over Quinebaug River, At Killingly Town Line.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT155 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

155 ft end to end, longest span 74 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built1957rebuilt 1989
Length154.9 ft47.2 m
Daily traffic9,100counted 2016
Last inspectedMay 2023every 24 months

Location

StateConnecticut
CountyWindham
LocationAt Killingly Town Line
CarriesRoute 101
CrossesQuinebaug River
Coordinates41.84929, -71.92109

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length154.9 ft (47.2 m)
Max Span74.1 ft (22.6 m)
Deck Width34.1 ft (10.4 m)
Deck Area490.9 sq m
Main Spans2
Year Built1957 (reconstructed 1989)

Traffic

Avg Daily Traffic9,100 (2016)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number01297

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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