Structure 1868 · Tolland County, CT

Route 74 over Hockanum River

Carries Route 74 over Hockanum River, .5 Mile East Of Route 31.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

29 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 slab bridge.

Built193888 years old
Length28.9 ft8.8 m
Daily traffic2,200counted 2020
Last inspectedJuly 2023every 24 months

Location

StateConnecticut
CountyTolland
Location.5 Mile East Of Route 31
CarriesRoute 74
CrossesHockanum River
Coordinates41.86795, -72.43342

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length28.9 ft (8.8 m)
Max Span25.9 ft (7.9 m)
Deck Width39.0 ft (11.9 m)
Deck Area104.7 sq m
Main Spans1
Year Built1938

Traffic

Avg Daily Traffic2,200 (2020)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number01868

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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