US Bridges

Darley RD over CSX Railroad

Fair

New Castle County, Delaware · N/W of Claymont · Structure no. 1074C207

Built
1953
72 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
164 ft
3 main spans
Daily traffic
7,109
2022 count
Owner
State
State Highway Agency

About this bridge

Darley RD over CSX Railroad is a steel continuous stringer/multi-beam or girder carrying Darley RD over CSX Railroad in New Castle County, Delaware. It was built in 1953, so it is 72 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 7,109 vehicles a day, roughly 7% of them trucks, projected to reach 9,697 by 2042. The structure is 164 ft (50 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesDarley RD
CrossesCSX Railroad
LocationN/W of Claymont
RouteCounty Highway 207
CountyNew Castle County
StateDelaware
Coordinates39.81419, -75.46954
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.3 US tons
Inventory rating65 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length164 ft (50 m)
Longest span52 ft (15.7 m)
Deck width54 ft (16.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,109 (2022)
Projected traffic9,697 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$117,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Darley RD over CSX Railroad built?

It was built in 1953, making it 72 years old in 2025.

What condition is Darley RD over CSX Railroad 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 2024.

How much traffic does Darley RD over CSX Railroad carry?

About 7,109 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Darley RD over CSX Railroad?

The structure is 164 ft (50 m) long with a longest span of 52 ft (15.7 m) and a deck 54 ft wide.

Who owns Darley RD over CSX Railroad?

It is owned by the State Highway Agency.