Structure 1800 060 · New Castle County, DE

I 495 SB over I 95 NB

Carries I 495 SB over I 95 NB, Christiana Interchange.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT290 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

290 ft end to end, longest span 97 ft: about 4 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.

Built1965rebuilt 1976
Length290.0 ft88.4 m
Daily traffic84,782counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateDelaware
CountyNew Castle
LocationChristiana Interchange
CarriesI 495 SB
CrossesI 95 NB
Coordinates39.71380, -75.58474

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length290.0 ft (88.4 m)
Max Span97.1 ft (29.6 m)
Deck Width57.7 ft (17.6 m)
Deck Area1555.8 sq m
Main Spans4
Year Built1965 (reconstructed 1976)

Traffic

Avg Daily Traffic84,782 (2023)
Truck Traffic15%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1800 060

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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