US Bridges

Manor House Road over S. Br. of Raritan River

Good

Morris County, New Jersey · 4 Mi. E. of Jct. 46 & 57 · Structure no. 1401103

Built
2005
20 years old
Condition
Good
inspected July 2023
Type
Arch - Deck
Concrete
Length
21 ft
1 main span
Daily traffic
681
2023 count
Owner
County
County Highway Agency

About this bridge

Manor House Road over S. Br. of Raritan River is a concrete arch - deck carrying Manor House Road over S. Br. of Raritan River in Morris County, New Jersey. It was built in 2005, so it is 20 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 681 vehicles a day, roughly 1% of them trucks, projected to reach 831 by 2043. The structure is 21 ft (6.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesManor House Road
CrossesS. Br. of Raritan River
Location4 Mi. E. of Jct. 46 & 57
RouteCounty Highway 0
CountyMorris County
StateNew Jersey
Coordinates40.86297, -74.75452
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
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic681 (2023)
Projected traffic831 by 2043
Trucks1%
Lanes on structure2
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Manor House Road over S. Br. of Raritan River built?

It was built in 2005, making it 20 years old in 2025.

What condition is Manor House Road over S. Br. of Raritan River 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 July 2023.

How much traffic does Manor House Road over S. Br. of Raritan River carry?

About 681 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Manor House Road over S. Br. of Raritan River?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 30 ft wide.

Who owns Manor House Road over S. Br. of Raritan River?

It is owned by the County Highway Agency.