US Bridges

Grubb RD over Trib. to Naamans Creek

Good

New Castle County, Delaware · West of Arden · Structure no. 1038 209

Built
1994
31 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
27 ft
1 main span
Daily traffic
9,527
2021 count
Owner
State
State Highway Agency

About this bridge

Grubb RD over Trib. to Naamans Creek is a concrete culvert carrying Grubb RD over Trib. to Naamans Creek in New Castle County, Delaware. It was built in 1994, so it is 31 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 9,527 vehicles a day, roughly 9% of them trucks, projected to reach 12,610 by 2042. The structure is 27 ft (8.1 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesGrubb RD
CrossesTrib. to Naamans Creek
LocationWest of Arden
RouteCounty Highway 209
CountyNew Castle County
StateDelaware
Coordinates39.81644, -75.50575
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length27 ft (8.1 m)
Longest span27 ft (8.1 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,527 (2021)
Projected traffic12,610 by 2042
Trucks9%
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$443,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Grubb RD over Trib. to Naamans Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Grubb RD over Trib. to Naamans 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 February 2023.

How much traffic does Grubb RD over Trib. to Naamans Creek carry?

About 9,527 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Grubb RD over Trib. to Naamans Creek?

The structure is 27 ft (8.1 m) long with a longest span of 27 ft (8.1 m) and a deck 47 ft wide.

Who owns Grubb RD over Trib. to Naamans Creek?

It is owned by the State Highway Agency.