Structure 4172 · New London County, CT

SR 608 over Yantic River

Carries SR 608 over Yantic River, 0.49 Mi West Of SR 612.

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
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT89 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

89 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 box-beam bridge.

Built1934rebuilt 1978
Length88.9 ft27.1 m
Daily traffic3,200counted 2020
Last inspectedJanuary 2024every 24 months

Location

StateConnecticut
CountyNew London
Location0.49 Mi West Of SR 612
CarriesSR 608
CrossesYantic River
Coordinates41.56402, -72.15545

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length88.9 ft (27.1 m)
Max Span86.0 ft (26.2 m)
Deck Width32.2 ft (9.8 m)
Deck Area265.6 sq m
Main Spans1
Year Built1934 (reconstructed 1978)

Traffic

Avg Daily Traffic3,200 (2020)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number04172

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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