US Bridges

Rockland RD over Wilson Run

Fair

New Castle County, Delaware · Rockland · Structure no. 1068 235

Built
1925
100 years old, rebuilt 2005
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
64,449
2021 count
Owner
State
State Highway Agency

About this bridge

Rockland RD over Wilson Run is a prestressed concrete box beam or girders - single or spread carrying Rockland RD over Wilson Run in New Castle County, Delaware. It was built in 1925 and reconstructed in 2005, so it is 100 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 64,449 vehicles a day, roughly 11% of them trucks, projected to reach 7,951 by 2042. The structure is 25 ft (7.5 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRockland RD
CrossesWilson Run
LocationRockland
RouteCounty Highway 235
CountyNew Castle County
StateDelaware
Coordinates39.79692, -75.57561
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating95.3 US tons
Inventory rating60.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.5 m)
Longest span21 ft (6.5 m)
Deck width34 ft (10.5 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64,449 (2021)
Projected traffic7,951 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$126,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rockland RD over Wilson Run built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2005.

What condition is Rockland RD over Wilson Run 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 February 2023.

How much traffic does Rockland RD over Wilson Run carry?

About 64,449 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Rockland RD over Wilson Run?

The structure is 25 ft (7.5 m) long with a longest span of 21 ft (6.5 m) and a deck 34 ft wide.

Who owns Rockland RD over Wilson Run?

It is owned by the State Highway Agency.