US Bridges

Hamp Road over Alexauken Creek

PoorClosed to traffic

Hunterdon County, New Jersey · 0.25 Mi. West of US 202 · Structure no. 10WD120

Built
1900
125 years old, rebuilt 1994
Condition
Poor
inspected April 2023
Type
Truss - Thru
Aluminum, Wrought Iron, or Cast Iron
Length
55 ft
1 main span
Daily traffic
67
2021 count
Owner
County
County Highway Agency

About this bridge

Hamp Road over Alexauken Creek is a aluminum, wrought iron, or cast iron truss - thru carrying Hamp Road over Alexauken Creek in Hunterdon County, New Jersey. It was built in 1900 and reconstructed in 1994, so it is 125 years old, older than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 67 vehicles a day, projected to reach 82 by 2041. The structure is 55 ft (16.8 m) long and 13 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesHamp Road
CrossesAlexauken Creek
Location0.25 Mi. West of US 202
RouteCity Street 0
Coordinates40.39733, -74.92686
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection0 FailedOut of service and beyond corrective action.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourScour critical; extensive scour has occurred
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy0: Immediate repair necessary to put back in service
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating16 US tons
Inventory rating8 US tons

Structure

Structure typeTruss - Thru
MaterialAluminum, Wrought Iron, or Cast Iron
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length55 ft (16.8 m)
Longest span54 ft (16.5 m)
Deck width13 ft (4 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67 (2021)
Projected traffic82 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$730,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hamp Road over Alexauken Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1994.

What condition is Hamp Road over Alexauken Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Hamp Road over Alexauken Creek carry?

About 67 vehicles per day (2021 count).

How long is Hamp Road over Alexauken Creek?

The structure is 55 ft (16.8 m) long with a longest span of 54 ft (16.5 m) and a deck 13 ft wide.

Who owns Hamp Road over Alexauken Creek?

It is owned by the County Highway Agency.