US Bridges

North Mill Road over Blackwater Branch

Fair

Cumberland County, New Jersey · .5 MI N of CR 540 · Structure no. 0600038

Built
1993
32 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
3,826
2024 count
Owner
County
County Highway Agency

About this bridge

North Mill Road over Blackwater Branch is a prestressed concrete box beam or girders - multiple carrying North Mill Road over Blackwater Branch in Cumberland County, New Jersey. It was built in 1993, so it is 32 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 3,826 vehicles a day, roughly 3% of them trucks, projected to reach 4,669 by 2044. The structure is 45 ft (13.7 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNorth Mill Road
CrossesBlackwater Branch
Location.5 MI N of CR 540
RouteCity Street 0
CountyCumberland County
StateNew Jersey
Coordinates39.51289, -75.05947
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating68 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span40 ft (12.2 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,826 (2024)
Projected traffic4,669 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 North Mill Road over Blackwater Branch built?

It was built in 1993, making it 32 years old in 2025.

What condition is North Mill Road over Blackwater Branch 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 July 2024.

How much traffic does North Mill Road over Blackwater Branch carry?

About 3,826 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is North Mill Road over Blackwater Branch?

The structure is 45 ft (13.7 m) long with a longest span of 40 ft (12.2 m) and a deck 44 ft wide.

Who owns North Mill Road over Blackwater Branch?

It is owned by the County Highway Agency.