US Bridges

Big Stone Beach RD over Swan Creek

Good

Kent County, Delaware · N. Milford City Limits · Structure no. 2013 000

Built
2008
17 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete
Length
42 ft
2 main spans
Daily traffic
554
2021 count
Owner
State
State Highway Agency

About this bridge

Big Stone Beach RD over Swan Creek is a concrete culvert carrying Big Stone Beach RD over Swan Creek in Kent County, Delaware. It was built in 2008, so it is 17 years old, younger than the Delaware average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 554 vehicles a day, roughly 9% of them trucks, projected to reach 692 by 2042. The structure is 42 ft (12.8 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesBig Stone Beach RD
CrossesSwan Creek
LocationN. Milford City Limits
RouteCity Street 0
Coordinates38.9425, -75.42673
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating46.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span20 ft (6.1 m)
Deck width48 ft (14.6 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic554 (2021)
Projected traffic692 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Big Stone Beach RD over Swan Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Big Stone Beach RD over Swan Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2022.

How much traffic does Big Stone Beach RD over Swan Creek carry?

About 554 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Big Stone Beach RD over Swan Creek?

The structure is 42 ft (12.8 m) long with a longest span of 20 ft (6.1 m) and a deck 48 ft wide.

Who owns Big Stone Beach RD over Swan Creek?

It is owned by the State Highway Agency.