US Bridges

CR 609- Manners RD over Back Brook

Fair

Hunterdon County, New Jersey · 0.83 MI N of CR 602 · Structure no. 100E239

Built
2002
23 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
2,421
2023 count
Owner
County
County Highway Agency

About this bridge

CR 609- Manners RD over Back Brook is a prestressed concrete box beam or girders - multiple carrying CR 609- Manners RD over Back Brook in Hunterdon County, New Jersey. It was built in 2002, so it is 23 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 2,421 vehicles a day, roughly 3% of them trucks, projected to reach 2,954 by 2043. The structure is 65 ft (19.8 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 609- Manners RD
CrossesBack Brook
Location0.83 MI N of CR 602
RouteCounty Highway 609
CountyHunterdon County
StateNew Jersey
Coordinates40.45931, -74.80619
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length65 ft (19.8 m)
Longest span60 ft (18.3 m)
Deck width41 ft (12.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,421 (2023)
Projected traffic2,954 by 2043
Trucks3%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 609- Manners RD over Back Brook built?

It was built in 2002, making it 23 years old in 2025.

What condition is CR 609- Manners RD over Back Brook 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 CR 609- Manners RD over Back Brook carry?

About 2,421 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR 609- Manners RD over Back Brook?

The structure is 65 ft (19.8 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns CR 609- Manners RD over Back Brook?

It is owned by the County Highway Agency.