US Bridges

I 495 SB over 84"PIPE/DRAINAGE Swale

Good

New Castle County, Delaware · Wilmington · Structure no. 1817S060

Built
1976
49 years old
Condition
Good
inspected March 2022
Type
Slab
Concrete
Length
102 ft
3 main spans
Daily traffic
51,844
2022 count
Owner
State
State Highway Agency

About this bridge

I 495 SB over 84"PIPE/DRAINAGE Swale is a concrete slab carrying I 495 SB over 84"PIPE/DRAINAGE Swale in New Castle County, Delaware. It was built in 1976, so it is 49 years old, older than the Delaware average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 51,844 vehicles a day, roughly 14% of them trucks, projected to reach 49,067 by 2042. The structure is 102 ft (31.1 m) long and 54 ft wide.

Location

Open in Google Maps
CarriesI 495 SB
Crosses84"PIPE/DRAINAGE Swale
LocationWilmington
RouteInterstate 495
CountyNew Castle County
StateDelaware
Coordinates39.73679, -75.52069
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width54 ft (16.5 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,844 (2022)
Projected traffic49,067 by 2042
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I 495 SB over 84"PIPE/DRAINAGE Swale built?

It was built in 1976, making it 49 years old in 2025.

What condition is I 495 SB over 84"PIPE/DRAINAGE Swale in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2022.

How much traffic does I 495 SB over 84"PIPE/DRAINAGE Swale carry?

About 51,844 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is I 495 SB over 84"PIPE/DRAINAGE Swale?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 54 ft wide.

Who owns I 495 SB over 84"PIPE/DRAINAGE Swale?

It is owned by the State Highway Agency.