US Bridges

Jebb Road over Ross Prong

Good

Kent County, Delaware · West of Wyoming · Structure no. 2227B227

Built
1974
51 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete
Length
21 ft
3 main spans
Daily traffic
113
2020 count
Owner
State
State Highway Agency

About this bridge

Jebb Road over Ross Prong is a concrete culvert carrying Jebb Road over Ross Prong in Kent County, Delaware. It was built in 1974, so it is 51 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 113 vehicles a day, roughly 13% of them trucks, projected to reach 140 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesJebb Road
CrossesRoss Prong
LocationWest of Wyoming
RouteCounty Highway 227
Coordinates39.09992, -75.64724
Functional classRural 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2021
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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span5 ft (1.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113 (2020)
Projected traffic140 by 2042
Trucks13%
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 Jebb Road over Ross Prong built?

It was built in 1974, making it 51 years old in 2025.

What condition is Jebb Road over Ross Prong 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 September 2021.

How much traffic does Jebb Road over Ross Prong carry?

About 113 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Jebb Road over Ross Prong?

The structure is 21 ft (6.4 m) long with a longest span of 5 ft (1.5 m).

Who owns Jebb Road over Ross Prong?

It is owned by the State Highway Agency.