US Bridges

CR517(MOUNTAIN Av) over Musconetcong River

Fair

Warren County, New Jersey · 50 Ft.South of Nj Rt 57 · Structure no. 2100806

Built
1996
29 years old
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
108 ft
2 main spans
Daily traffic
10,310
2023 count
Owner
County
County Highway Agency

About this bridge

CR517(MOUNTAIN Av) over Musconetcong River is a prestressed concrete slab carrying CR517(MOUNTAIN Av) over Musconetcong River in Warren County, New Jersey. It was built in 1996, so it is 29 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 10,310 vehicles a day, roughly 3% of them trucks, projected to reach 12,580 by 2043. The structure is 108 ft (32.9 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR517(MOUNTAIN Av)
CrossesMusconetcong River
Location50 Ft.South of Nj Rt 57
RouteCounty Highway 517
CountyWarren County
StateNew Jersey
Coordinates40.83451, -74.82284
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length108 ft (32.9 m)
Longest span52 ft (15.8 m)
Deck width65 ft (19.7 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,310 (2023)
Projected traffic12,580 by 2043
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR517(MOUNTAIN Av) over Musconetcong River built?

It was built in 1996, making it 29 years old in 2025.

What condition is CR517(MOUNTAIN Av) over Musconetcong 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 March 2023.

How much traffic does CR517(MOUNTAIN Av) over Musconetcong River carry?

About 10,310 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR517(MOUNTAIN Av) over Musconetcong River?

The structure is 108 ft (32.9 m) long with a longest span of 52 ft (15.8 m) and a deck 65 ft wide.

Who owns CR517(MOUNTAIN Av) over Musconetcong River?

It is owned by the County Highway Agency.