Structure 455 · Hartford County, CT

Route 159 over Stony Brook

Carries Route 159 over Stony Brook, 1 Mi No Of Windsor Lks Tl.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT258 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

258 ft end to end: about 4 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 deck arch.

Built1929rebuilt 1996
Length258.2 ft78.7 m
Daily traffic6,600counted 2016
Last inspectedJune 2023every 24 months

Location

StateConnecticut
CountyHartford
Location1 Mi No Of Windsor Lks Tl
CarriesRoute 159
CrossesStony Brook
Coordinates41.95832, -72.62734

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length258.2 ft (78.7 m)
Max Span142.1 ft (43.3 m)
Deck Width33.1 ft (10.1 m)
Deck Area794.9 sq m
Main Spans1
Year Built1929 (reconstructed 1996)

Traffic

Avg Daily Traffic6,600 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number00455

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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