Structure 3191D · New Haven County, CT

I-84 Tr 809 over Route 8 NB Riverside ST

Carries I-84 Tr 809 over Route 8 NB Riverside ST, SB RTE 8 Exit 31to EB I84.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT781 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 6/9

781 ft end to end, longest span 95 ft: about 2.2 football fields. 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.

Built196660 years old
Length780.8 ft238 m
Daily traffic14,600counted 2018
Last inspectedOctober 2024every 24 months

Location

StateConnecticut
CountyNew Haven
LocationSB RTE 8 Exit 31to EB I84
CarriesI-84 Tr 809
CrossesRoute 8 NB Riverside ST
Coordinates41.55191, -73.05297

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length780.8 ft (238 m)
Max Span95.1 ft (29 m)
Deck Width35.4 ft (10.8 m)
Deck Area2570.4 sq m
Main Spans10
Year Built1966

Traffic

Avg Daily Traffic14,600 (2018)
Truck Traffic9%
Lanes On Bridge1
Lanes Under Bridge5

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number03191D

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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