Structure 1822S060 · New Castle County, DE

I 495 SB over Norfolk Southern&amtrak

Carries I 495 SB over Norfolk Southern&amtrak, Edgemoor.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT525 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

525 ft end to end, longest span 147 ft: about 7 semi-trucks nose to tail. 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 multi-beam bridge.

Built197650 years old
Length524.9 ft160 m
Daily traffic69,555counted 2021
Last inspectedJune 2022every 48 months

Location

StateDelaware
CountyNew Castle
LocationEdgemoor
CarriesI 495 SB
CrossesNorfolk Southern&amtrak
Coordinates39.75334, -75.50078

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length524.9 ft (160 m)
Max Span147.0 ft (44.8 m)
Deck Width53.8 ft (16.4 m)
Deck Area2,624 sq m
Main Spans4
Year Built1976

Traffic

Avg Daily Traffic69,555 (2021)
Truck Traffic15%
Lanes On Bridge3
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1822S060

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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