US Bridges

Jefferson Road over Troy Brook

Good

Morris County, New Jersey · 0.5MI SE of I80&I287 JCT · Structure no. 1429006

Built
2000
25 years old
Condition
Good
inspected August 2023
Type
Arch - Deck
Concrete
Length
29 ft
1 main span
Daily traffic
2,845
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Jefferson Road over Troy Brook is a concrete arch - deck carrying Jefferson Road over Troy Brook in Morris County, New Jersey. It was built in 2000, so it is 25 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,845 vehicles a day, roughly 1% of them trucks, projected to reach 3,472 by 2043. The structure is 29 ft (8.8 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesJefferson Road
CrossesTroy Brook
Location0.5MI SE of I80&I287 JCT
RouteCity Street 0
CountyMorris County
StateNew Jersey
Coordinates40.8589, -74.41003
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width54 ft (16.6 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,845 (2023)
Projected traffic3,472 by 2043
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$192,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Jefferson Road over Troy Brook built?

It was built in 2000, making it 25 years old in 2025.

What condition is Jefferson Road over Troy Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Jefferson Road over Troy Brook carry?

About 2,845 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Jefferson Road over Troy Brook?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 54 ft wide.

Who owns Jefferson Road over Troy Brook?

It is owned by the Town or Township Highway Agency.