US Bridges

I 495 over Terminal Ave RD 359

Fair

New Castle County, Delaware · South of Wilmington · Structure no. 1812 060

Built
1972
53 years old
Condition
Fair
inspected June 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
195 ft
3 main spans
Daily traffic
101,111
2022 count
Owner
State
State Highway Agency

About this bridge

I 495 over Terminal Ave RD 359 is a steel stringer/multi-beam or girder carrying I 495 over Terminal Ave RD 359 in New Castle County, Delaware. It was built in 1972, so it is 53 years old, older than the Delaware average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 101,111 vehicles a day, roughly 14% of them trucks, projected to reach 129,187 by 2042. The structure is 195 ft (59.5 m) long and 114 ft wide.

Location

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CarriesI 495
CrossesTerminal Ave RD 359
LocationSouth of Wilmington
RouteInterstate 495
CountyNew Castle County
StateDelaware
Coordinates39.71988, -75.5405
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length195 ft (59.5 m)
Longest span106 ft (32.3 m)
Deck width114 ft (34.8 m)
Roadway width109 ft (33.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101,111 (2022)
Projected traffic129,187 by 2042
Trucks14%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 over Terminal Ave RD 359 built?

It was built in 1972, making it 53 years old in 2025.

What condition is I 495 over Terminal Ave RD 359 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2022.

How much traffic does I 495 over Terminal Ave RD 359 carry?

About 101,111 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is I 495 over Terminal Ave RD 359?

The structure is 195 ft (59.5 m) long with a longest span of 106 ft (32.3 m) and a deck 114 ft wide.

Who owns I 495 over Terminal Ave RD 359?

It is owned by the State Highway Agency.