US Bridges

Old Capitol Trail over Mill Creek

Good

New Castle County, Delaware · N. of Delaware Park · Structure no. 1235 020

Built
1996
29 years old
Condition
Good
inspected July 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
3,894
2021 count
Owner
State
State Highway Agency

About this bridge

Old Capitol Trail over Mill Creek is a prestressed concrete box beam or girders - multiple carrying Old Capitol Trail over Mill Creek in New Castle County, Delaware. It was built in 1996, so it is 29 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 3,894 vehicles a day, roughly 9% of them trucks, projected to reach 3,671 by 2042. The structure is 63 ft (19.2 m) long and 47 ft wide.

Location

Open in Google Maps
CarriesOld Capitol Trail
CrossesMill Creek
LocationN. of Delaware Park
RouteCounty Highway 20
CountyNew Castle County
StateDelaware
Coordinates39.71422, -75.66584
Functional classUrban Collector

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 inspectionJuly 2022
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 rating76.8 US tons
Inventory rating60 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width47 ft (14.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,894 (2021)
Projected traffic3,671 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Capitol Trail over Mill Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Old Capitol Trail over Mill 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 July 2022.

How much traffic does Old Capitol Trail over Mill Creek carry?

About 3,894 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Old Capitol Trail over Mill Creek?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 47 ft wide.

Who owns Old Capitol Trail over Mill Creek?

It is owned by the State Highway Agency.