US Bridges

North Bridge ST over Peters Brook

Fair

Somerset County, New Jersey · 1.17 Mi. N. of Us. 206 · Structure no. 18F0806

Built
1925
100 years old, rebuilt 2003
Condition
Fair
inspected October 2023
Type
Arch - Deck
Concrete
Length
65 ft
1 main span
Daily traffic
9,720
2023 count
Owner
County
County Highway Agency

About this bridge

North Bridge ST over Peters Brook is a concrete arch - deck carrying North Bridge ST over Peters Brook in Somerset County, New Jersey. It was built in 1925 and reconstructed in 2003, so it is 100 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 9,720 vehicles a day, roughly 4% of them trucks, projected to reach 11,664 by 2043. The structure is 65 ft (19.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNorth Bridge ST
CrossesPeters Brook
Location1.17 Mi. N. of Us. 206
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.57315, -74.61032
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length65 ft (19.8 m)
Longest span63 ft (19.2 m)
Deck width45 ft (13.7 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,720 (2023)
Projected traffic11,664 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusEligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$75,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was North Bridge ST over Peters Brook built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2003.

What condition is North Bridge ST over Peters 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 October 2023.

How much traffic does North Bridge ST over Peters Brook carry?

About 9,720 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is North Bridge ST over Peters Brook?

The structure is 65 ft (19.8 m) long with a longest span of 63 ft (19.2 m) and a deck 45 ft wide.

Who owns North Bridge ST over Peters Brook?

It is owned by the County Highway Agency.