US Bridges

620-BURNT Mills RD over I-287 NB

Fair

Somerset County, New Jersey · .3 Mile North of I-78 JCT · Structure no. 1815150

Built
1964
61 years old, rebuilt 2014
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
151 ft
3 main spans
Daily traffic
8,445
2023 count
Owner
State
State Highway Agency

About this bridge

620-BURNT Mills RD over I-287 NB is a steel stringer/multi-beam or girder carrying 620-BURNT Mills RD over I-287 NB in Somerset County, New Jersey. It was built in 1964 and reconstructed in 2014, so it is 61 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 8,445 vehicles a day, roughly 3% of them trucks, projected to reach 10,135 by 2043. The structure is 151 ft (46 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries620-BURNT Mills RD
CrossesI-287 NB
Location.3 Mile North of I-78 JCT
RouteCounty Highway 620
CountySomerset County
StateNew Jersey
Coordinates40.64652, -74.64595
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating67.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length151 ft (46 m)
Longest span79 ft (24.1 m)
Deck width45 ft (13.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,445 (2023)
Projected traffic10,135 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$210,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 620-BURNT Mills RD over I-287 NB built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2014.

What condition is 620-BURNT Mills RD over I-287 NB 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 620-BURNT Mills RD over I-287 NB carry?

About 8,445 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 620-BURNT Mills RD over I-287 NB?

The structure is 151 ft (46 m) long with a longest span of 79 ft (24.1 m) and a deck 45 ft wide.

Who owns 620-BURNT Mills RD over I-287 NB?

It is owned by the State Highway Agency.