US Bridges

CR510 Columbia Tpk over Black Brook

Fair

Morris County, New Jersey · 0.8MI E NJ24&CR510 · Structure no. 1400451

Built
1929
96 years old, rebuilt 1960
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
30,731
2023 count
Owner
County
County Highway Agency

About this bridge

CR510 Columbia Tpk over Black Brook is a steel stringer/multi-beam or girder carrying CR510 Columbia Tpk over Black Brook in Morris County, New Jersey. It was built in 1929 and reconstructed in 1960, so it is 96 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 30,731 vehicles a day, roughly 4% of them trucks, projected to reach 37,492 by 2043. The structure is 35 ft (10.7 m) long and 57 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR510 Columbia Tpk
CrossesBlack Brook
Location0.8MI E NJ24&CR510
RouteCounty Highway 510
CountyMorris County
StateNew Jersey
Coordinates40.79058, -74.41295
Functional classUrban Other Principal Arterial

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.
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 protection7 GoodSome minor problems.
Last inspectionJuly 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span31 ft (9.4 m)
Deck width57 ft (17.5 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,731 (2023)
Projected traffic37,492 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 CR510 Columbia Tpk over Black Brook built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1960.

What condition is CR510 Columbia Tpk over Black 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 CR510 Columbia Tpk over Black Brook carry?

About 30,731 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is CR510 Columbia Tpk over Black Brook?

The structure is 35 ft (10.7 m) long with a longest span of 31 ft (9.4 m) and a deck 57 ft wide.

Who owns CR510 Columbia Tpk over Black Brook?

It is owned by the County Highway Agency.