US Bridges

Burnt Mills Road over Lamington River

FairPosted for load

Somerset County, New Jersey · .14 MI South CR620 · Structure no. 18D1004

Built
1919
106 years old, rebuilt 1985
Condition
Fair
inspected October 2023
Type
Truss - Thru
Steel
Length
86 ft
1 main span
Daily traffic
1,664
2023 count
Owner
County
County Highway Agency

About this bridge

Burnt Mills Road over Lamington River is a steel truss - thru carrying Burnt Mills Road over Lamington River in Somerset County, New Jersey. It was built in 1919 and reconstructed in 1985, so it is 106 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,664 vehicles a day, roughly 1% of them trucks, projected to reach 1,997 by 2043. The structure is 86 ft (26.2 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesBurnt Mills Road
CrossesLamington River
Location.14 MI South CR620
RouteCounty Highway 641
Coordinates40.63454, -74.68662
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length86 ft (26.2 m)
Longest span82 ft (25 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,664 (2023)
Projected traffic1,997 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.9 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Burnt Mills Road over Lamington River built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1985.

What condition is Burnt Mills 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 October 2023.

How much traffic does Burnt Mills Road over Lamington River carry?

About 1,664 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Burnt Mills Road over Lamington River?

The structure is 86 ft (26.2 m) long with a longest span of 82 ft (25 m) and a deck 16 ft wide.

Who owns Burnt Mills Road over Lamington River?

It is owned by the County Highway Agency.