US Bridges

Warrenville RD over East Br Middle Brook

Fair

Somerset County, New Jersey · 0.23 MI S of Rt 527 · Structure no. 18K0908

Built
1914
111 years old, rebuilt 1961
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
17,307
2023 count
Owner
County
County Highway Agency

About this bridge

Warrenville RD over East Br Middle Brook is a concrete slab carrying Warrenville RD over East Br Middle Brook in Somerset County, New Jersey. It was built in 1914 and reconstructed in 1961, so it is 111 years old, older 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 17,307 vehicles a day, roughly 4% of them trucks, projected to reach 21,118 by 2043. The structure is 23 ft (7 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWarrenville RD
CrossesEast Br Middle Brook
Location0.23 MI S of Rt 527
RouteCounty Highway 651
Coordinates40.61461, -74.49414
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,307 (2023)
Projected traffic21,118 by 2043
Trucks4%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$120,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Warrenville RD over East Br Middle Brook built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1961.

What condition is Warrenville RD over East Br Middle 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 September 2023.

How much traffic does Warrenville RD over East Br Middle Brook carry?

About 17,307 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Warrenville RD over East Br Middle Brook?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 33 ft wide.

Who owns Warrenville RD over East Br Middle Brook?

It is owned by the County Highway Agency.