US Bridges

US301 over Armstrong Corner RD

Good

New Castle County, Delaware · N of Middletown · Structure no. 1472S084

Built
2018
7 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
5,811
2021 count
Owner
State
State Highway Agency

About this bridge

US301 over Armstrong Corner RD is a prestressed concrete stringer/multi-beam or girder carrying US301 over Armstrong Corner RD in New Castle County, Delaware. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,811 vehicles a day, roughly 9% of them trucks, projected to reach 50,189 by 2042. The structure is 94 ft (28.5 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS301
CrossesArmstrong Corner RD
LocationN of Middletown
RouteU.S. Route 301
Coordinates39.48061, -75.72431
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating36.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length94 ft (28.5 m)
Longest span91 ft (27.6 m)
Deck width53 ft (16.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,811 (2021)
Projected traffic50,189 by 2042
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US301 over Armstrong Corner RD built?

It was built in 2018, making it 7 years old in 2025.

What condition is US301 over Armstrong Corner RD 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 2022.

How much traffic does US301 over Armstrong Corner RD carry?

About 5,811 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is US301 over Armstrong Corner RD?

The structure is 94 ft (28.5 m) long with a longest span of 91 ft (27.6 m) and a deck 53 ft wide.

Who owns US301 over Armstrong Corner RD?

It is owned by the State Highway Agency.