US Bridges

Black River Road over Lamington River

Fair

Hunterdon County, New Jersey · 2.25 MI E of Rt 517 · Structure no. 1000064

Built
1931
94 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
116 ft
3 main spans
Daily traffic
1,324
2023 count
Owner
County
County Highway Agency

About this bridge

Black River Road over Lamington River is a steel stringer/multi-beam or girder carrying Black River Road over Lamington River in Hunterdon County, New Jersey. It was built in 1931, so it is 94 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 1,324 vehicles a day, roughly 3% of them trucks, projected to reach 1,615 by 2043. The structure is 116 ft (35.4 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBlack River Road
CrossesLamington River
Location2.25 MI E of Rt 517
RouteCity Street 0
CountyHunterdon County
StateNew Jersey
Coordinates40.67932, -74.72099
Functional classRural Local

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length116 ft (35.4 m)
Longest span63 ft (19.2 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,324 (2023)
Projected traffic1,615 by 2043
Trucks3%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$56,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Black River Road over Lamington River built?

It was built in 1931, making it 94 years old in 2025.

What condition is Black River Road over Lamington 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 April 2023.

How much traffic does Black River Road over Lamington River carry?

About 1,324 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Black River Road over Lamington River?

The structure is 116 ft (35.4 m) long with a longest span of 63 ft (19.2 m) and a deck 28 ft wide.

Who owns Black River Road over Lamington River?

It is owned by the County Highway Agency.