Structure 2978 · Fairfield County, CT

Interstate 84 WB over Route 34

Carries Interstate 84 WB over Route 34, 0.25 Mi East Of Exit 11.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT131 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

131 ft end to end. 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.

Built197254 years old
Length130.9 ft39.9 m
Daily traffic37,600counted 2021
Last inspectedDecember 2023every 24 months

Location

StateConnecticut
CountyFairfield
Location0.25 Mi East Of Exit 11
CarriesInterstate 84 WB
CrossesRoute 34
Coordinates41.41581, -73.27889

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length130.9 ft (39.9 m)
Max Span124.0 ft (37.8 m)
Deck Width55.4 ft (16.9 m)
Deck Area674.3 sq m
Main Spans1
Year Built1972

Traffic

Avg Daily Traffic37,600 (2021)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number02978

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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