US Bridges

Belmead-Grigtwn RD over Trib of Pike Run

Fair

Somerset County, New Jersey · 1.42 MI N of CR 533 · Structure no. 18E0308

Built
1989
36 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
4,558
2023 count
Owner
County
County Highway Agency

About this bridge

Belmead-Grigtwn RD over Trib of Pike Run is a concrete culvert carrying Belmead-Grigtwn RD over Trib of Pike Run in Somerset County, New Jersey. It was built in 1989, so it is 36 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 5 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 4,558 vehicles a day, roughly 3% of them trucks, projected to reach 5,470 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBelmead-Grigtwn RD
CrossesTrib of Pike Run
Location1.42 MI N of CR 533
RouteCounty Highway 630
CountySomerset County
StateNew Jersey
Coordinates40.44899, -74.64152
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating63.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,558 (2023)
Projected traffic5,470 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 Belmead-Grigtwn RD over Trib of Pike Run built?

It was built in 1989, making it 36 years old in 2025.

What condition is Belmead-Grigtwn RD over Trib of Pike Run 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 August 2023.

How much traffic does Belmead-Grigtwn RD over Trib of Pike Run carry?

About 4,558 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Belmead-Grigtwn RD over Trib of Pike Run?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns Belmead-Grigtwn RD over Trib of Pike Run?

It is owned by the County Highway Agency.