US Bridges

620-BURNT Mills RD over I-287 SB

Good

Somerset County, New Jersey · .3 Mile North of I-78 JCT · Structure no. 1815151

Built
1963
62 years old, rebuilt 2014
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
134 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 SB is a steel stringer/multi-beam or girder carrying 620-BURNT Mills RD over I-287 SB in Somerset County, New Jersey. It was built in 1963 and reconstructed in 2014, so it is 62 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,445 vehicles a day, roughly 3% of them trucks, projected to reach 10,135 by 2043. The structure is 134 ft (40.8 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries620-BURNT Mills RD
CrossesI-287 SB
Location.3 Mile North of I-78 JCT
RouteCounty Highway 620
CountySomerset County
StateNew Jersey
Coordinates40.64645, -74.64711
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating68.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length134 ft (40.8 m)
Longest span68 ft (20.7 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$211,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2014.

What condition is 620-BURNT Mills RD over I-287 SB in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does 620-BURNT Mills RD over I-287 SB 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 SB?

The structure is 134 ft (40.8 m) long with a longest span of 68 ft (20.7 m) and a deck 45 ft wide.

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

It is owned by the State Highway Agency.