US Bridges

Seashore HY/SR404 over Marshyhope Creek

Fair

Sussex County, Delaware · West of Greenwood · Structure no. 3112 404

Built
1958
67 years old, rebuilt 2000
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
154 ft
3 main spans
Daily traffic
11,755
2022 count
Owner
State
State Highway Agency

About this bridge

Seashore HY/SR404 over Marshyhope Creek is a prestressed concrete box beam or girders - multiple carrying Seashore HY/SR404 over Marshyhope Creek in Sussex County, Delaware. It was built in 1958 and reconstructed in 2000, so it is 67 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 11,755 vehicles a day, roughly 9% of them trucks, projected to reach 9,901 by 2042. The structure is 154 ft (46.8 m) long and 48 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSeashore HY/SR404
CrossesMarshyhope Creek
LocationWest of Greenwood
RouteState Highway 404
CountySussex County
StateDelaware
Coordinates38.79437, -75.6937
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating33.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length154 ft (46.8 m)
Longest span49 ft (14.9 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,755 (2022)
Projected traffic9,901 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$455,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Seashore HY/SR404 over Marshyhope Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2000.

What condition is Seashore HY/SR404 over Marshyhope Creek 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 July 2023.

How much traffic does Seashore HY/SR404 over Marshyhope Creek carry?

About 11,755 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Seashore HY/SR404 over Marshyhope Creek?

The structure is 154 ft (46.8 m) long with a longest span of 49 ft (14.9 m) and a deck 48 ft wide.

Who owns Seashore HY/SR404 over Marshyhope Creek?

It is owned by the State Highway Agency.