US Bridges

Fourth ST over CSX Railroad

Fair

New Castle County, Delaware · Wilmington · Structure no. 1609A000

Built
1900
125 years old, rebuilt 1979
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
99
2022 count
Owner
State
State Highway Agency

About this bridge

Fourth ST over CSX Railroad is a steel stringer/multi-beam or girder carrying Fourth ST over CSX Railroad in New Castle County, Delaware. It was built in 1900 and reconstructed in 1979, so it is 125 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 99 vehicles a day, roughly 13% of them trucks, projected to reach 124 by 2042. The structure is 75 ft (22.9 m) long and 74 ft wide.

Location

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CarriesFourth ST
CrossesCSX Railroad
LocationWilmington
RouteCity Street 0
CountyNew Castle County
StateDelaware
Coordinates39.75115, -75.57764
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span70 ft (21.3 m)
Deck width74 ft (22.6 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2022)
Projected traffic124 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$825,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Fourth ST over CSX Railroad built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1979.

What condition is Fourth ST 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 April 2024.

How much traffic does Fourth ST over CSX Railroad carry?

About 99 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Fourth ST over CSX Railroad?

The structure is 75 ft (22.9 m) long with a longest span of 70 ft (21.3 m) and a deck 74 ft wide.

Who owns Fourth ST over CSX Railroad?

It is owned by the State Highway Agency.