US Bridges

S Main ST (cr 634) over Morristown Line MP 40.17

Fair

Morris County, New Jersey · 1.22 MI N of US 46 · Structure no. 1465154

Built
1991
34 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
6,780
2023 count
Owner
Unknown
Unknown

About this bridge

S Main ST (cr 634) over Morristown Line MP 40.17 is a prestressed concrete box beam or girders - multiple carrying S Main ST (cr 634) over Morristown Line MP 40.17 in Morris County, New Jersey. It was built in 1991, so it is 34 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 6,780 vehicles a day, roughly 4% of them trucks, projected to reach 8,140 by 2043. The structure is 57 ft (17.4 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS Main ST (cr 634)
CrossesMorristown Line MP 40.17
Location1.22 MI N of US 46
RouteCounty Highway 634
CountyMorris County
StateNew Jersey
Coordinates40.90189, -74.58045
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating63.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length57 ft (17.4 m)
Longest span53 ft (16.2 m)
Deck width46 ft (14.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,780 (2023)
Projected traffic8,140 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S Main ST (cr 634) over Morristown Line MP 40.17 built?

It was built in 1991, making it 34 years old in 2025.

What condition is S Main ST (cr 634) over Morristown Line MP 40.17 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 S Main ST (cr 634) over Morristown Line MP 40.17 carry?

About 6,780 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S Main ST (cr 634) over Morristown Line MP 40.17?

The structure is 57 ft (17.4 m) long with a longest span of 53 ft (16.2 m) and a deck 46 ft wide.

Who owns S Main ST (cr 634) over Morristown Line MP 40.17?

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