Structure 99 · Fairfield County, CT

Interstate 95 over Metro-north Railroad

Carries Interstate 95 over Metro-north Railroad, Between Exits 24 & 25.

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 FT496 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

496 ft end to end, longest span 232 ft: about 7 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.

Built200620 years old
Length496.1 ft151.2 m
Daily traffic133,300counted 2023
Last inspectedDecember 2024every 24 months

Location

StateConnecticut
CountyFairfield
LocationBetween Exits 24 & 25
CarriesInterstate 95
CrossesMetro-north Railroad
Coordinates41.16726, -73.21973

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length496.1 ft (151.2 m)
Max Span232.0 ft (70.7 m)
Deck Width164.0 ft (50 m)
Deck Area7,560 sq m
Main Spans3
Year Built2006

Traffic

Avg Daily Traffic133,300 (2023)
Truck Traffic14%
Lanes On Bridge7

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number00099

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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