Structure 4418 · New Haven County, CT

East Rock Road over Mill River

Carries East Rock Road over Mill River, At Junct W Farnum Drive.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT85 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

85 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 deck arch.

Built1900rebuilt 2013
Length85.0 ft25.9 m
Daily traffic1,365counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateConnecticut
CountyNew Haven
LocationAt Junct W Farnum Drive
CarriesEast Rock Road
CrossesMill River
Coordinates41.33041, -72.90899

Physical Characteristics

MaterialSteel
DesignArch - Deck
Total Length85.0 ft (25.9 m)
Max Span84.3 ft (25.7 m)
Deck Width31.8 ft (9.7 m)
Deck Area251.2 sq m
Main Spans1
Year Built1900 (reconstructed 2013)

Traffic

Avg Daily Traffic1,365 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number04418

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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