US Bridges

Nj 31 over Prescott Brook

Fair

Hunterdon County, New Jersey · 3.8 MI S I78&NJ 31 JCT · Structure no. 1012159

Built
2000
25 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
26,614
2023 count
Owner
State
State Highway Agency

About this bridge

Nj 31 over Prescott Brook is a prestressed concrete box beam or girders - multiple carrying Nj 31 over Prescott Brook in Hunterdon County, New Jersey. It was built in 2000, so it is 25 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 26,614 vehicles a day, roughly 4% of them trucks, projected to reach 31,937 by 2043. The structure is 47 ft (14.3 m) long and 102 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNj 31
CrossesPrescott Brook
Location3.8 MI S I78&NJ 31 JCT
RouteState Highway 31
CountyHunterdon County
StateNew Jersey
Coordinates40.58635, -74.86527
Functional classUrban Other Principal 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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating65 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length47 ft (14.3 m)
Longest span43 ft (13.1 m)
Deck width102 ft (31.1 m)
Roadway width96 ft (29.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,614 (2023)
Projected traffic31,937 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Nj 31 over Prescott Brook built?

It was built in 2000, making it 25 years old in 2025.

What condition is Nj 31 over Prescott 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 May 2023.

How much traffic does Nj 31 over Prescott Brook carry?

About 26,614 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nj 31 over Prescott Brook?

The structure is 47 ft (14.3 m) long with a longest span of 43 ft (13.1 m) and a deck 102 ft wide.

Who owns Nj 31 over Prescott Brook?

It is owned by the State Highway Agency.