US Bridges

SR 1 over US 13

Fair

New Castle County, Delaware · South of ST Georges · Structure no. 1904N083

Built
1999
26 years old
Condition
Fair
inspected June 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
349 ft
2 main spans
Daily traffic
22,720
2020 count
Owner
State
State Highway Agency

About this bridge

SR 1 over US 13 is a steel continuous stringer/multi-beam or girder carrying SR 1 over US 13 in New Castle County, Delaware. It was built in 1999, so it is 26 years old, younger 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 22,720 vehicles a day, roughly 9% of them trucks, projected to reach 28,239 by 2042. The structure is 349 ft (106.3 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR 1
CrossesUS 13
LocationSouth of ST Georges
RouteState Highway 1
CountyNew Castle County
StateDelaware
Coordinates39.51102, -75.64912
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length349 ft (106.3 m)
Longest span165 ft (50.3 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,720 (2020)
Projected traffic28,239 by 2042
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 SR 1 over US 13 built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR 1 over US 13 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 June 2021.

How much traffic does SR 1 over US 13 carry?

About 22,720 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SR 1 over US 13?

The structure is 349 ft (106.3 m) long with a longest span of 165 ft (50.3 m) and a deck 45 ft wide.

Who owns SR 1 over US 13?

It is owned by the State Highway Agency.