US Bridges

Dupont PKWY/US13 S over Waterway

Fair

New Castle County, Delaware · S. of Wilmington · Structure no. 1667S033

Built
1992
33 years old
Condition
Fair
inspected May 2022
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
14,790
2021 count
Owner
State
State Highway Agency

About this bridge

Dupont PKWY/US13 S over Waterway is a concrete culvert carrying Dupont PKWY/US13 S over Waterway in New Castle County, Delaware. It was built in 1992, so it is 33 years old, younger 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 14,790 vehicles a day, roughly 6% of them trucks, projected to reach 20,024 by 2042. The structure is 21 ft (6.4 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDupont PKWY/US13 S
CrossesWaterway
LocationS. of Wilmington
RouteU.S. Route 13
CountyNew Castle County
StateDelaware
Coordinates39.71607, -75.55854
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width57 ft (17.3 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,790 (2021)
Projected traffic20,024 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dupont PKWY/US13 S over Waterway built?

It was built in 1992, making it 33 years old in 2025.

What condition is Dupont PKWY/US13 S over Waterway 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 May 2022.

How much traffic does Dupont PKWY/US13 S over Waterway carry?

About 14,790 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Dupont PKWY/US13 S over Waterway?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 57 ft wide.

Who owns Dupont PKWY/US13 S over Waterway?

It is owned by the State Highway Agency.