Structure 1197 · Fairfield County, CT

Interstate 84 WB over Still River

Carries Interstate 84 WB over Still River, 500 East Of Exit 7.

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
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT124 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

124 ft end to end, longest span 57 ft. 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.

Built1962rebuilt 1993
Length124.0 ft37.8 m
Daily traffic33,100counted 2021
Last inspectedAugust 2023every 24 months

Location

StateConnecticut
CountyFairfield
Location500 East Of Exit 7
CarriesInterstate 84 WB
CrossesStill River
Coordinates41.41438, -73.41426

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length124.0 ft (37.8 m)
Max Span57.1 ft (17.4 m)
Deck Width54.8 ft (16.7 m)
Deck Area631.3 sq m
Main Spans2
Year Built1962 (reconstructed 1993)

Traffic

Avg Daily Traffic33,100 (2021)
Truck Traffic9%
Lanes On Bridge3

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number01197

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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