Structure 6116 · Hartford County, CT

Interstate-91 NB over Ct Southern Rr

Carries Interstate-91 NB over Ct Southern Rr, .1mi(n)of Charter Oak Brg.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT242 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

242 ft end to end: about 3 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 box-beam bridge.

Built199135 years old
Length242.1 ft73.8 m
Daily traffic52,000counted 2019
Last inspectedJanuary 2023every 24 months

Location

StateConnecticut
CountyHartford
Location.1mi(n)of Charter Oak Brg
CarriesInterstate-91 NB
CrossesCt Southern Rr
Coordinates41.75216, -72.65819

Physical Characteristics

MaterialSteel
DesignBox Beam - Single/Spread
Total Length242.1 ft (73.8 m)
Max Span231.6 ft (70.6 m)
Deck Width84.0 ft (25.6 m)
Deck Area1889.3 sq m
Main Spans1
Year Built1991

Traffic

Avg Daily Traffic52,000 (2019)
Truck Traffic9%
Lanes On Bridge5
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number06116

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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