US Bridges

Old Mill Road over Wickecheoke Creek

Fair

Hunterdon County, New Jersey · 2 Miles North of CR 604 · Structure no. 100D488

Built
1899
126 years old
Condition
Fair
inspected April 2023
Type
Truss - Thru
Steel
Length
49 ft
1 main span
Daily traffic
126
2023 count
Owner
County
County Highway Agency

About this bridge

Old Mill Road over Wickecheoke Creek is a steel truss - thru carrying Old Mill Road over Wickecheoke Creek in Hunterdon County, New Jersey. It was built in 1899, so it is 126 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 fair condition with a lowest component rating of 5 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 126 vehicles a day, roughly 3% of them trucks, projected to reach 151 by 2043. The structure is 49 ft (14.9 m) long and 11 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOld Mill Road
CrossesWickecheoke Creek
Location2 Miles North of CR 604
CountyHunterdon County
StateNew Jersey
Coordinates40.46474, -74.97671
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating34 US tons
Inventory rating20 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span47 ft (14.3 m)
Deck width11 ft (3.5 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126 (2023)
Projected traffic151 by 2043
Trucks3%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Mill Road over Wickecheoke Creek built?

It was built in 1899, making it 126 years old in 2025.

What condition is Old Mill Road over Wickecheoke Creek 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 April 2023.

How much traffic does Old Mill Road over Wickecheoke Creek carry?

About 126 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Old Mill Road over Wickecheoke Creek?

The structure is 49 ft (14.9 m) long with a longest span of 47 ft (14.3 m) and a deck 11 ft wide.

Who owns Old Mill Road over Wickecheoke Creek?

It is owned by the County Highway Agency.