US Bridges

RTE Nj 18 SB Rmp C over Metlars Brook

Good

Middlesex County, New Jersey · Adjacent to River Road Br · Structure no. 1237160

Built
2005
20 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
336 ft
2 main spans
Daily traffic
23,396
2024 count
Owner
State
State Highway Agency

About this bridge

RTE Nj 18 SB Rmp C over Metlars Brook is a steel continuous stringer/multi-beam or girder carrying RTE Nj 18 SB Rmp C over Metlars Brook in Middlesex County, New Jersey. It was built in 2005, so it is 20 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 23,396 vehicles a day, roughly 5% of them trucks, projected to reach 28,548 by 2044. The structure is 336 ft (102.4 m) long and 78 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRTE Nj 18 SB Rmp C
CrossesMetlars Brook
LocationAdjacent to River Road Br
RouteState Highway 18
Coordinates40.51456, -74.4581
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating88 US tons
Inventory rating52 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length336 ft (102.4 m)
Longest span194 ft (59.1 m)
Deck width78 ft (23.7 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,396 (2024)
Projected traffic28,548 by 2044
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 RTE Nj 18 SB Rmp C over Metlars Brook built?

It was built in 2005, making it 20 years old in 2025.

What condition is RTE Nj 18 SB Rmp C over Metlars Brook 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 December 2024.

How much traffic does RTE Nj 18 SB Rmp C over Metlars Brook carry?

About 23,396 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is RTE Nj 18 SB Rmp C over Metlars Brook?

The structure is 336 ft (102.4 m) long with a longest span of 194 ft (59.1 m) and a deck 78 ft wide.

Who owns RTE Nj 18 SB Rmp C over Metlars Brook?

It is owned by the State Highway Agency.