US Bridges

CR524 (allaire Rd) over Mill Run

Fair

Monmouth County, New Jersey · 0.4MI W of W 18th AV-CR30 · Structure no. 13000W1

Built
1926
99 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
4,752
2023 count
Owner
County
County Highway Agency

About this bridge

CR524 (allaire Rd) over Mill Run is a steel stringer/multi-beam or girder carrying CR524 (allaire Rd) over Mill Run in Monmouth County, New Jersey. It was built in 1926, so it is 99 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 4,752 vehicles a day, roughly 3% of them trucks, projected to reach 5,702 by 2043. The structure is 28 ft (8.5 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR524 (allaire Rd)
CrossesMill Run
Location0.4MI W of W 18th AV-CR30
RouteCounty Highway 524
CountyMonmouth County
StateNew Jersey
Coordinates40.15971, -74.12467
Functional classUrban 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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span25 ft (7.6 m)
Deck width38 ft (11.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,752 (2023)
Projected traffic5,702 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR524 (allaire Rd) over Mill Run built?

It was built in 1926, making it 99 years old in 2025.

What condition is CR524 (allaire Rd) over Mill Run 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 CR524 (allaire Rd) over Mill Run carry?

About 4,752 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR524 (allaire Rd) over Mill Run?

The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 38 ft wide.

Who owns CR524 (allaire Rd) over Mill Run?

It is owned by the County Highway Agency.