Structure 1813 060 · New Castle County, DE

I 495 over Christina River N/s Rr

Carries I 495 over Christina River N/s Rr, Wilmington.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
4,804 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

4,804 ft end to end, longest span 325 ft: about 13 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 girder bridge.

Built1974rebuilt 2006
Length4804.1 ft1464.3 m
Daily traffic89,020counted 2023
Last inspectedJune 2024every 24 months

Location

StateDelaware
CountyNew Castle
LocationWilmington
CarriesI 495
CrossesChristina River N/s Rr
Coordinates39.72675, -75.53190

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length4804.1 ft (1464.3 m)
Max Span325.1 ft (99.1 m)
Deck Width97.1 ft (29.6 m)
Deck Area43343.3 sq m
Main Spans3
Year Built1974 (reconstructed 2006)

Traffic

Avg Daily Traffic89,020 (2023)
Truck Traffic15%
Lanes On Bridge6
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1813 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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