US Bridges

Mill Creek RD over Mill Creek

Good

New Castle County, Delaware · South of Hockessin · Structure no. 1179 282

Built
1984
41 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
41 ft
2 main spans
Daily traffic
2,109
2023 count
Owner
State
State Highway Agency

About this bridge

Mill Creek RD over Mill Creek is a concrete culvert carrying Mill Creek RD over Mill Creek in New Castle County, Delaware. It was built in 1984, so it is 41 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 2,109 vehicles a day, roughly 7% of them trucks, projected to reach 2,979 by 2042. The structure is 41 ft (12.6 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMill Creek RD
CrossesMill Creek
LocationSouth of Hockessin
RouteCounty Highway 282
Coordinates39.78027, -75.69695
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length41 ft (12.6 m)
Longest span20 ft (6.1 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,109 (2023)
Projected traffic2,979 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Mill Creek RD over Mill Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Mill Creek RD 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 May 2024.

How much traffic does Mill Creek RD over Mill Creek carry?

About 2,109 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Mill Creek RD over Mill Creek?

The structure is 41 ft (12.6 m) long with a longest span of 20 ft (6.1 m) and a deck 47 ft wide.

Who owns Mill Creek RD over Mill Creek?

It is owned by the State Highway Agency.