US Bridges

Blackbird Landing over Blackbird Creek

Good

New Castle County, Delaware · E. of Townsend · Structure no. 1451 455

Built
1969
56 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
87 ft
2 main spans
Daily traffic
1,022
2022 count
Owner
State
State Highway Agency

About this bridge

Blackbird Landing over Blackbird Creek is a prestressed concrete box beam or girders - multiple carrying Blackbird Landing over Blackbird Creek in New Castle County, Delaware. It was built in 1969, so it is 56 years old, older 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 1,022 vehicles a day, roughly 17% of them trucks, projected to reach 1,717 by 2042. The structure is 87 ft (26.4 m) long and 34 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesBlackbird Landing
CrossesBlackbird Creek
LocationE. of Townsend
RouteCounty Highway 455
Coordinates39.38872, -75.63594
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 protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length87 ft (26.4 m)
Longest span42 ft (12.7 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,022 (2022)
Projected traffic1,717 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Blackbird Landing over Blackbird Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Blackbird Landing over Blackbird 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 May 2023.

How much traffic does Blackbird Landing over Blackbird Creek carry?

About 1,022 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Blackbird Landing over Blackbird Creek?

The structure is 87 ft (26.4 m) long with a longest span of 42 ft (12.7 m) and a deck 34 ft wide.

Who owns Blackbird Landing over Blackbird Creek?

It is owned by the State Highway Agency.