US Bridges

US113 & SR1 NB over Murderkill River

Fair

Kent County, Delaware · Frederica Bypass · Structure no. 2008I008

Built
1965
60 years old, rebuilt 2000
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
1,000 ft
13 main spans
Daily traffic
23,353
2023 count
Owner
State
State Highway Agency

About this bridge

US113 & SR1 NB over Murderkill River is a steel stringer/multi-beam or girder carrying US113 & SR1 NB over Murderkill River in Kent County, Delaware. It was built in 1965 and reconstructed in 2000, so it is 60 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 5 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 23,353 vehicles a day, roughly 9% of them trucks, projected to reach 27,953 by 2042. The structure is 1,000 ft (304.8 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesUS113 & SR1 NB
CrossesMurderkill River
LocationFrederica Bypass
RouteU.S. Route 113
CountyKent County
StateDelaware
Coordinates39.01096, -75.45875
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20 + Mod
Structure length1,000 ft (304.8 m)
Longest span111 ft (33.9 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,353 (2023)
Projected traffic27,953 by 2042
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US113 & SR1 NB over Murderkill River built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2000.

What condition is US113 & SR1 NB 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 October 2024.

How much traffic does US113 & SR1 NB over Murderkill River carry?

About 23,353 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US113 & SR1 NB over Murderkill River?

The structure is 1,000 ft (304.8 m) long with a longest span of 111 ft (33.9 m) and a deck 34 ft wide.

Who owns US113 & SR1 NB over Murderkill River?

It is owned by the State Highway Agency.