US Bridges

I 495 SB over US 13

Fair

New Castle County, Delaware · S. of Wilmington · Structure no. 1806 060

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
222 ft
2 main spans
Daily traffic
44,899
2023 count
Owner
State
State Highway Agency

About this bridge

I 495 SB over US 13 is a steel continuous stringer/multi-beam or girder carrying I 495 SB over US 13 in New Castle County, Delaware. It was built in 1975, so it is 50 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 44,899 vehicles a day, roughly 9% of them trucks, projected to reach 55,661 by 2042. The structure is 222 ft (67.7 m) long and 57 ft wide.

Location

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CarriesI 495 SB
CrossesUS 13
LocationS. of Wilmington
RouteInterstate 495
CountyNew Castle County
StateDelaware
Coordinates39.7172, -75.55732
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length222 ft (67.7 m)
Longest span109 ft (33.1 m)
Deck width57 ft (17.3 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,899 (2023)
Projected traffic55,661 by 2042
Trucks9%
Lanes on structure3
Traffic directionOne-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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 SB over US 13 built?

It was built in 1975, making it 50 years old in 2025.

What condition is I 495 SB over US 13 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 September 2024.

How much traffic does I 495 SB over US 13 carry?

About 44,899 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I 495 SB over US 13?

The structure is 222 ft (67.7 m) long with a longest span of 109 ft (33.1 m) and a deck 57 ft wide.

Who owns I 495 SB over US 13?

It is owned by the State Highway Agency.