US Bridges

N.Main ST (cr 637) over Washington Sec (conrail)

Fair

Warren County, New Jersey · 0.3MI SE NJ57&CR637 JCT · Structure no. 2154162

Built
1916
109 years old, rebuilt 1996
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
3,577
2023 count
Owner
Unknown
Unknown

About this bridge

N.Main ST (cr 637) over Washington Sec (conrail) is a prestressed concrete slab carrying N.Main ST (cr 637) over Washington Sec (conrail) in Warren County, New Jersey. It was built in 1916 and reconstructed in 1996, so it is 109 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 3,577 vehicles a day, roughly 3% of them trucks, projected to reach 4,365 by 2043. The structure is 43 ft (13.1 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN.Main ST (cr 637)
CrossesWashington Sec (conrail)
Location0.3MI SE NJ57&CR637 JCT
RouteCounty Highway 637
CountyWarren County
StateNew Jersey
Coordinates40.70074, -75.12007
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length43 ft (13.1 m)
Longest span38 ft (11.6 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,577 (2023)
Projected traffic4,365 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerUnknown
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.6 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was N.Main ST (cr 637) over Washington Sec (conrail) built?

It was built in 1916, making it 109 years old in 2025. It was reconstructed in 1996.

What condition is N.Main ST (cr 637) over Washington Sec (conrail) 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 September 2023.

How much traffic does N.Main ST (cr 637) over Washington Sec (conrail) carry?

About 3,577 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is N.Main ST (cr 637) over Washington Sec (conrail)?

The structure is 43 ft (13.1 m) long with a longest span of 38 ft (11.6 m) and a deck 28 ft wide.

Who owns N.Main ST (cr 637) over Washington Sec (conrail)?

It is owned by the Unknown and maintained by the State Highway Agency.