US Bridges

West Blackwell St. over Morristown Line

Fair

Morris County, New Jersey · 0.25 MI East of US 46 · Structure no. 1464158

Built
1905
120 years old, rebuilt 1994
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
86 ft
1 main span
Daily traffic
9,130
2023 count
Owner
Unknown
Unknown

About this bridge

West Blackwell St. over Morristown Line is a steel stringer/multi-beam or girder carrying West Blackwell St. over Morristown Line in Morris County, New Jersey. It was built in 1905 and reconstructed in 1994, so it is 120 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 9,130 vehicles a day, roughly 4% of them trucks, projected to reach 10,960 by 2043. The structure is 86 ft (26.2 m) long and 54 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWest Blackwell St.
CrossesMorristown Line
Location0.25 MI East of US 46
RouteCounty Highway 659
CountyMorris County
StateNew Jersey
Coordinates40.88367, -74.56275
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating66 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length86 ft (26.2 m)
Longest span78 ft (23.8 m)
Deck width54 ft (16.6 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,130 (2023)
Projected traffic10,960 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerUnknown
Maintained byOther State Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$15.3 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was West Blackwell St. over Morristown Line built?

It was built in 1905, making it 120 years old in 2025. It was reconstructed in 1994.

What condition is West Blackwell St. over Morristown Line 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 West Blackwell St. over Morristown Line carry?

About 9,130 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is West Blackwell St. over Morristown Line?

The structure is 86 ft (26.2 m) long with a longest span of 78 ft (23.8 m) and a deck 54 ft wide.

Who owns West Blackwell St. over Morristown Line?

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