US Bridges

West Dewey Avenue over Morristown Line MP 40.50

Poor

Morris County, New Jersey · 0.88 MI S of Nj 15 · Structure no. 1465156

Built
1935
90 years old
Condition
Poor
inspected March 2023
Type
Girder and Floorbeam System
Steel
Length
362 ft
1 main span
Daily traffic
5,850
2023 count
Owner
Unknown
Unknown

About this bridge

West Dewey Avenue over Morristown Line MP 40.50 is a steel girder and floorbeam system carrying West Dewey Avenue over Morristown Line MP 40.50 in Morris County, New Jersey. It was built in 1935, so it is 90 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,850 vehicles a day, roughly 4% of them trucks, projected to reach 7,020 by 2043. The structure is 362 ft (110.3 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWest Dewey Avenue
CrossesMorristown Line MP 40.50
Location0.88 MI S of Nj 15
RouteCounty Highway 642
CountyMorris County
StateNew Jersey
Coordinates40.90454, -74.58695
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+8 approach)
Design loadH 20
Structure length362 ft (110.3 m)
Longest span102 ft (31.1 m)
Deck width47 ft (14.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,850 (2023)
Projected traffic7,020 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerUnknown
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$55.1 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was West Dewey Avenue over Morristown Line MP 40.50 built?

It was built in 1935, making it 90 years old in 2025.

What condition is West Dewey Avenue over Morristown Line MP 40.50 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does West Dewey Avenue over Morristown Line MP 40.50 carry?

About 5,850 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is West Dewey Avenue over Morristown Line MP 40.50?

The structure is 362 ft (110.3 m) long with a longest span of 102 ft (31.1 m) and a deck 47 ft wide.

Who owns West Dewey Avenue over Morristown Line MP 40.50?

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