US Bridges

River Road (east) over Trib. N. Br. Raritan R.

Good

Somerset County, New Jersey · 0.8 MI W. of US 206/202 · Structure no. 18E1104

Built
2014
11 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
530
2023 count
Owner
County
County Highway Agency

About this bridge

River Road (east) over Trib. N. Br. Raritan R. is a steel stringer/multi-beam or girder carrying River Road (east) over Trib. N. Br. Raritan R. in Somerset County, New Jersey. It was built in 2014, so it is 11 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 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 530 vehicles a day, roughly 3% of them trucks, projected to reach 636 by 2043. The structure is 36 ft (11 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRiver Road (east)
CrossesTrib. N. Br. Raritan R.
Location0.8 MI W. of US 206/202
CountySomerset County
StateNew Jersey
Coordinates40.65659, -74.65827
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span29 ft (8.8 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic530 (2023)
Projected traffic636 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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 River Road (east) over Trib. N. Br. Raritan R. built?

It was built in 2014, making it 11 years old in 2025.

What condition is River Road (east) over Trib. N. Br. Raritan R. 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 October 2023.

How much traffic does River Road (east) over Trib. N. Br. Raritan R. carry?

About 530 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is River Road (east) over Trib. N. Br. Raritan R.?

The structure is 36 ft (11 m) long with a longest span of 29 ft (8.8 m) and a deck 32 ft wide.

Who owns River Road (east) over Trib. N. Br. Raritan R.?

It is owned by the County Highway Agency.