US Bridges

Market ST over Murderkill River

Fair

Kent County, Delaware · Frederica · Structure no. 2389A389

Built
1996
29 years old
Condition
Fair
inspected July 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
106 ft
2 main spans
Daily traffic
398
2020 count
Owner
State
State Highway Agency

About this bridge

Market ST over Murderkill River is a prestressed concrete box beam or girders - multiple carrying Market ST over Murderkill River in Kent County, Delaware. It was built in 1996, so it is 29 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 398 vehicles a day, roughly 8% of them trucks, projected to reach 494 by 2042. The structure is 106 ft (32.3 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMarket ST
CrossesMurderkill River
LocationFrederica
RouteCounty Highway 389
CountyKent County
StateDelaware
Coordinates39.00197, -75.46558
Functional classRural Local

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2021
Inspection intervalevery 48 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length106 ft (32.3 m)
Longest span51 ft (15.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic398 (2020)
Projected traffic494 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Market ST over Murderkill River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Market ST over Murderkill River 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 2021.

How much traffic does Market ST over Murderkill River carry?

About 398 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Market ST over Murderkill River?

The structure is 106 ft (32.3 m) long with a longest span of 51 ft (15.6 m) and a deck 32 ft wide.

Who owns Market ST over Murderkill River?

It is owned by the State Highway Agency.