US Bridges

Old Mill Road over Burnett Brook

Fair

Morris County, New Jersey · 1.5 M. E. of CR 513 · Structure no. 1400727

Built
1951
74 years old, rebuilt 1993
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
2,444
2023 count
Owner
County
County Highway Agency

About this bridge

Old Mill Road over Burnett Brook is a prestressed concrete slab carrying Old Mill Road over Burnett Brook in Morris County, New Jersey. It was built in 1951 and reconstructed in 1993, so it is 74 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 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 2,444 vehicles a day, roughly 1% of them trucks, projected to reach 2,982 by 2043. The structure is 22 ft (6.7 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesOld Mill Road
CrossesBurnett Brook
Location1.5 M. E. of CR 513
CountyMorris County
StateNew Jersey
Coordinates40.79929, -74.6411
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating89 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width30 ft (9.1 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,444 (2023)
Projected traffic2,982 by 2043
Trucks1%
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$182,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Mill Road over Burnett Brook built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1993.

What condition is Old Mill Road over Burnett 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 July 2023.

How much traffic does Old Mill Road over Burnett Brook carry?

About 2,444 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Old Mill Road over Burnett Brook?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 30 ft wide.

Who owns Old Mill Road over Burnett Brook?

It is owned by the County Highway Agency.