US Bridges

Acken Road over Dead River

Good

Somerset County, New Jersey · 0.86 MI S.Of Co.Rt. 512 · Structure no. 18H1105

Built
1997
28 years old
Condition
Good
inspected September 2023
Type
Slab
Wood or Timber
Length
53 ft
2 main spans
Daily traffic
480
2023 count
Owner
County
County Highway Agency

About this bridge

Acken Road over Dead River is a wood or timber slab carrying Acken Road over Dead River in Somerset County, New Jersey. It was built in 1997, so it is 28 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 480 vehicles a day, roughly 1% of them trucks, projected to reach 576 by 2043. The structure is 53 ft (16.2 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesAcken Road
CrossesDead River
Location0.86 MI S.Of Co.Rt. 512
RouteCity Street 0
Coordinates40.65146, -74.5461
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating81 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 25 or greater
Structure length53 ft (16.2 m)
Longest span25 ft (7.6 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic480 (2023)
Projected traffic576 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Acken Road over Dead River built?

It was built in 1997, making it 28 years old in 2025.

What condition is Acken Road over Dead 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 September 2023.

How much traffic does Acken Road over Dead River carry?

About 480 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Acken Road over Dead River?

The structure is 53 ft (16.2 m) long with a longest span of 25 ft (7.6 m) and a deck 31 ft wide.

Who owns Acken Road over Dead River?

It is owned by the County Highway Agency.