US Bridges

Mt Herman RD (655) over I-80 WB

Fair

Warren County, New Jersey · 5.1MI East of US 46 · Structure no. 2115167

Built
1970
55 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
111 ft
1 main span
Daily traffic
2,451
2023 count
Owner
State
State Highway Agency

About this bridge

Mt Herman RD (655) over I-80 WB is a steel stringer/multi-beam or girder carrying Mt Herman RD (655) over I-80 WB in Warren County, New Jersey. It was built in 1970, so it is 55 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 2,451 vehicles a day, roughly 3% of them trucks, projected to reach 2,940 by 2043. The structure is 111 ft (33.8 m) long and 40 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMt Herman RD (655)
CrossesI-80 WB
Location5.1MI East of US 46
RouteCounty Highway 655
CountyWarren County
StateNew Jersey
Coordinates40.9355, -75.01512
Functional classRural Major 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
Deck7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating88 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length111 ft (33.8 m)
Longest span106 ft (32.3 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,451 (2023)
Projected traffic2,940 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mt Herman RD (655) over I-80 WB built?

It was built in 1970, making it 55 years old in 2025.

What condition is Mt Herman RD (655) over I-80 WB 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 Mt Herman RD (655) over I-80 WB carry?

About 2,451 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Mt Herman RD (655) over I-80 WB?

The structure is 111 ft (33.8 m) long with a longest span of 106 ft (32.3 m) and a deck 40 ft wide.

Who owns Mt Herman RD (655) over I-80 WB?

It is owned by the State Highway Agency.