US Bridges

Shelly RD over Br. of Tennent Brook

Fair

Middlesex County, New Jersey · .5 West of Rt 9 · Structure no. 123B203

Built
1995
30 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
668
2023 count
Owner
County
County Highway Agency

About this bridge

Shelly RD over Br. of Tennent Brook is a concrete culvert carrying Shelly RD over Br. of Tennent Brook in Middlesex County, New Jersey. It was built in 1995, so it is 30 years old, younger than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 668 vehicles a day, roughly 1% of them trucks, projected to reach 815 by 2043. The structure is 33 ft (10.1 m) long and 81 ft wide.

Location

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CarriesShelly RD
CrossesBr. of Tennent Brook
Location.5 West of Rt 9
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.43928, -74.30789
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span16 ft (4.9 m)
Deck width81 ft (24.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic668 (2023)
Projected traffic815 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Shelly RD over Br. of Tennent Brook built?

It was built in 1995, making it 30 years old in 2025.

What condition is Shelly RD over Br. of Tennent Brook in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Shelly RD over Br. of Tennent Brook carry?

About 668 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Shelly RD over Br. of Tennent Brook?

The structure is 33 ft (10.1 m) long with a longest span of 16 ft (4.9 m) and a deck 81 ft wide.

Who owns Shelly RD over Br. of Tennent Brook?

It is owned by the County Highway Agency.