US Bridges

Chestnut Grove RD over Cahoon Branch

Good

Kent County, Delaware · West of Dover · Structure no. 2158A158

Built
2013
12 years old
Condition
Good
inspected February 2022
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
2,325
2020 count
Owner
State
State Highway Agency

About this bridge

Chestnut Grove RD over Cahoon Branch is a concrete culvert carrying Chestnut Grove RD over Cahoon Branch in Kent County, Delaware. It was built in 2013, so it is 12 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 2,325 vehicles a day, roughly 7% of them trucks, projected to reach 4,379 by 2042. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesChestnut Grove RD
CrossesCahoon Branch
LocationWest of Dover
RouteCounty Highway 158
CountyKent County
StateDelaware
Coordinates39.16822, -75.57667
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating57.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length22 ft (6.8 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,325 (2020)
Projected traffic4,379 by 2042
Trucks7%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$296,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Chestnut Grove RD over Cahoon Branch built?

It was built in 2013, making it 12 years old in 2025.

What condition is Chestnut Grove RD over Cahoon Branch 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 2022.

How much traffic does Chestnut Grove RD over Cahoon Branch carry?

About 2,325 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Chestnut Grove RD over Cahoon Branch?

The structure is 22 ft (6.8 m) long with a longest span of 20 ft (6.2 m).

Who owns Chestnut Grove RD over Cahoon Branch?

It is owned by the State Highway Agency.