Structure 6006 · Hartford County, CT

Interstate-91 SB over SR 510 (main Street)

Carries Interstate-91 SB over SR 510 (main Street), 0.4 Mi N Windsor Locks Tl.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT144 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

144 ft end to end, longest span 64 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.

Built1959rebuilt 1989
Length144.0 ft43.9 m
Daily traffic54,800counted 2015
Last inspectedNovember 2023every 24 months

Location

StateConnecticut
CountyHartford
Location0.4 Mi N Windsor Locks Tl
CarriesInterstate-91 SB
CrossesSR 510 (main Street)
Coordinates41.91888, -72.61562

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length144.0 ft (43.9 m)
Max Span64.0 ft (19.5 m)
Deck Width70.5 ft (21.5 m)
Deck Area943.9 sq m
Main Spans3
Year Built1959 (reconstructed 1989)

Traffic

Avg Daily Traffic54,800 (2015)
Truck Traffic9%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number06006

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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