US Bridges

Brackenville RD over Mill Creek

Good

New Castle County, Delaware · South of Hockessin · Structure no. 1177 274

Built
1846
179 years old, rebuilt 1965
Condition
Good
inspected May 2024
Type
Slab
Concrete
Length
21 ft
1 main span
Daily traffic
7,382
2023 count
Owner
State
State Highway Agency

About this bridge

Brackenville RD over Mill Creek is a concrete slab carrying Brackenville RD over Mill Creek in New Castle County, Delaware. It was built in 1846 and reconstructed in 1965, so it is 179 years old, older 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 7,382 vehicles a day, roughly 8% of them trucks, projected to reach 8,233 by 2042. The structure is 21 ft (6.4 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBrackenville RD
CrossesMill Creek
LocationSouth of Hockessin
RouteCounty Highway 274
Coordinates39.77533, -75.69005
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,382 (2023)
Projected traffic8,233 by 2042
Trucks8%
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 statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$161,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Brackenville RD over Mill Creek built?

It was built in 1846, making it 179 years old in 2025. It was reconstructed in 1965.

What condition is Brackenville 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 Brackenville RD over Mill Creek carry?

About 7,382 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Brackenville RD over Mill Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 27 ft wide.

Who owns Brackenville RD over Mill Creek?

It is owned by the State Highway Agency.