Structure 3799 · New London County, CT

SR 642 over Yantic River

Carries SR 642 over Yantic River, 1.7 Mi West Of Route 32.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT86 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

86 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 multi-beam bridge.

Built1938rebuilt 2003
Length86.0 ft26.2 m
Daily traffic8,400counted 2023
Last inspectedNovember 2024every 24 months

Location

StateConnecticut
CountyNew London
Location1.7 Mi West Of Route 32
CarriesSR 642
CrossesYantic River
Coordinates41.55743, -72.11265

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length86.0 ft (26.2 m)
Max Span80.1 ft (24.4 m)
Deck Width47.9 ft (14.6 m)
Deck Area382.5 sq m
Main Spans1
Year Built1938 (reconstructed 2003)

Traffic

Avg Daily Traffic8,400 (2023)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number03799

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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