Structure 154 · New Haven County, CT

Marsh Hill Road over I-95 & I-95 Ramp 352

Carries Marsh Hill Road over I-95 & I-95 Ramp 352, 0.8 Mi S Of Us1.

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 FT298 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

298 ft end to end, longest span 167 ft: about 4 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.

Built200125 years old
Length297.9 ft90.8 m
Daily traffic18,900counted 2021
Last inspectedFebruary 2024every 24 months

Location

StateConnecticut
CountyNew Haven
Location0.8 Mi S Of Us1
CarriesMarsh Hill Road
CrossesI-95 & I-95 Ramp 352
Coordinates41.25301, -72.99998

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length297.9 ft (90.8 m)
Max Span167.0 ft (50.9 m)
Deck Width89.2 ft (27.2 m)
Deck Area2469.8 sq m
Main Spans2
Year Built2001

Traffic

Avg Daily Traffic18,900 (2021)
Truck Traffic3%
Lanes On Bridge6
Lanes Under Bridge7

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number00154

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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