Structure 4386 · New Haven County, CT

Route 8 Southbound over Mnrr Naugtck Rv

Carries Route 8 Southbound over Mnrr Naugtck Rv, RTE 8 Exit 24.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT547 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

547 ft end to end, longest span 196 ft: about 1.5 football fields. Lengths and the semi-truck 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.

Built198145 years old
Length546.9 ft166.7 m
Daily traffic22,900counted 2021
Last inspectedMay 2023every 24 months

Location

StateConnecticut
CountyNew Haven
LocationRTE 8 Exit 24
CarriesRoute 8 Southbound
CrossesMnrr Naugtck Rv
Coordinates41.44415, -73.06724

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Single/Spread
Total Length546.9 ft (166.7 m)
Max Span195.9 ft (59.7 m)
Deck Width49.9 ft (15.2 m)
Deck Area2533.8 sq m
Main Spans3
Year Built1981

Traffic

Avg Daily Traffic22,900 (2021)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number04386

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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