US Bridges

Blackbird Sta RD over Blackbird Creek

Good

New Castle County, Delaware · S.W. of Blackbird · Structure no. 1438 463

Built
2017
8 years old
Condition
Good
inspected October 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
843
2020 count
Owner
State
State Highway Agency

About this bridge

Blackbird Sta RD over Blackbird Creek is a prestressed concrete box beam or girders - multiple carrying Blackbird Sta RD over Blackbird Creek in New Castle County, Delaware. It was built in 2017, so it is 8 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 843 vehicles a day, roughly 13% of them trucks, projected to reach 1,047 by 2042. The structure is 53 ft (16.2 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBlackbird Sta RD
CrossesBlackbird Creek
LocationS.W. of Blackbird
RouteCounty Highway 463
CountyNew Castle County
StateDelaware
Coordinates39.36616, -75.66941
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.6 US tons
Inventory rating39.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length53 ft (16.2 m)
Longest span50 ft (15.2 m)
Deck width41 ft (12.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic843 (2020)
Projected traffic1,047 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$250,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Blackbird Sta RD over Blackbird Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Blackbird Sta RD 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 October 2021.

How much traffic does Blackbird Sta RD over Blackbird Creek carry?

About 843 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Blackbird Sta RD over Blackbird Creek?

The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 41 ft wide.

Who owns Blackbird Sta RD over Blackbird Creek?

It is owned by the State Highway Agency.