US Bridges

Palmer Road over Mill Brook

Good

Morris County, New Jersey · 0.6MI S of US46&CR513 JCT · Structure no. 1400814

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Frame
Concrete
Length
31 ft
1 main span
Daily traffic
5,580
2023 count
Owner
County
County Highway Agency

About this bridge

Palmer Road over Mill Brook is a concrete frame carrying Palmer Road over Mill Brook in Morris County, New Jersey. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,580 vehicles a day, roughly 1% of them trucks, projected to reach 6,810 by 2043. The structure is 31 ft (9.4 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPalmer Road
CrossesMill Brook
Location0.6MI S of US46&CR513 JCT
RouteCity Street 0
CountyMorris County
StateNew Jersey
Coordinates40.87878, -74.52533
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.8 US tons
Inventory rating43.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,580 (2023)
Projected traffic6,810 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$662,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Palmer Road over Mill Brook built?

It was built in 2023, making it 2 years old in 2025.

What condition is Palmer Road over Mill 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 June 2023.

How much traffic does Palmer Road over Mill Brook carry?

About 5,580 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Palmer Road over Mill Brook?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 37 ft wide.

Who owns Palmer Road over Mill Brook?

It is owned by the County Highway Agency.