Structure 530B · Fairfield County, CT

Route 15 SB over SR 719

Carries Route 15 SB over SR 719, Route 15 Exit 40.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT61 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 6/9 · sets the ratingSubstructure 7/9

61 ft end to end. Lengths and the car 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 rigid-frame bridge.

Built1938rebuilt 2016
Length60.7 ft18.5 m
Daily traffic28,100counted 2022
Last inspectedDecember 2024every 24 months

Location

StateConnecticut
CountyFairfield
LocationRoute 15 Exit 40
CarriesRoute 15 SB
CrossesSR 719
Coordinates41.14272, -73.42574

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length60.7 ft (18.5 m)
Max Span54.1 ft (16.5 m)
Deck Width36.7 ft (11.2 m)
Deck Area207.2 sq m
Main Spans1
Year Built1938 (reconstructed 2016)

Traffic

Avg Daily Traffic28,100 (2022)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge4

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 Number00530B

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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