US Bridges

County Route 512 over Dead River

Fair

Somerset County, New Jersey · 1.7 MI W of Rt 525 · Structure no. 18F1105

Built
2021
4 years old
Condition
Fair
inspected September 2023
Type
Frame
Concrete
Length
44 ft
2 main spans
Daily traffic
10,597
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 512 over Dead River is a concrete frame carrying County Route 512 over Dead River in Somerset County, New Jersey. It was built in 2021, so it is 4 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 10,597 vehicles a day, roughly 3% of them trucks, projected to reach 12,716 by 2043. The structure is 44 ft (13.4 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCounty Route 512
CrossesDead River
Location1.7 MI W of Rt 525
RouteCounty Highway 512
CountySomerset County
StateNew Jersey
Coordinates40.66609, -74.59666
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating74.6 US tons
Inventory rating57.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length44 ft (13.4 m)
Longest span20 ft (6.1 m)
Deck width45 ft (13.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,597 (2023)
Projected traffic12,716 by 2043
Trucks3%
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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$573,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Route 512 over Dead River built?

It was built in 2021, making it 4 years old in 2025.

What condition is County Route 512 over Dead River 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 County Route 512 over Dead River carry?

About 10,597 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Route 512 over Dead River?

The structure is 44 ft (13.4 m) long with a longest span of 20 ft (6.1 m) and a deck 45 ft wide.

Who owns County Route 512 over Dead River?

It is owned by the County Highway Agency.