Structure 3835 · New Haven County, CT

Route 40 SB over Route 10

Carries Route 40 SB over Route 10, 3mi Northof Interstate 91.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT125 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

125 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.

Built197650 years old
Length125.0 ft38.1 m
Daily traffic8,900counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateConnecticut
CountyNew Haven
Location3mi Northof Interstate 91
CarriesRoute 40 SB
CrossesRoute 10
Coordinates41.40073, -72.89762

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length125.0 ft (38.1 m)
Max Span120.1 ft (36.6 m)
Deck Width37.7 ft (11.5 m)
Deck Area438.1 sq m
Main Spans1
Year Built1976

Traffic

Avg Daily Traffic8,900 (2022)
Truck Traffic6%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number03835

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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