US Bridges

Twin Willows Rd. over Snows Branch

Good

Kent County, Delaware · S.E. of Smyrna · Structure no. 2084A084

Built
1996
29 years old
Condition
Good
inspected October 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
585
2021 count
Owner
State
State Highway Agency

About this bridge

Twin Willows Rd. over Snows Branch is a prestressed concrete box beam or girders - multiple carrying Twin Willows Rd. over Snows Branch 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 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 585 vehicles a day, roughly 13% of them trucks, projected to reach 641 by 2042. The structure is 36 ft (11 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesTwin Willows Rd.
CrossesSnows Branch
LocationS.E. of Smyrna
RouteCounty Highway 84
CountyKent County
StateDelaware
Coordinates39.2543, -75.56616
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating68.6 US tons
Inventory rating53.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span33 ft (10 m)
Deck width35 ft (10.6 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic585 (2021)
Projected traffic641 by 2042
Trucks13%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Twin Willows Rd. over Snows Branch built?

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

What condition is Twin Willows Rd. over Snows Branch 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 October 2022.

How much traffic does Twin Willows Rd. over Snows Branch carry?

About 585 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is Twin Willows Rd. over Snows Branch?

The structure is 36 ft (11 m) long with a longest span of 33 ft (10 m) and a deck 35 ft wide.

Who owns Twin Willows Rd. over Snows Branch?

It is owned by the State Highway Agency.