US Bridges

CR675 (degroat Rd) over Little Flat Brook

Poor

Sussex County, New Jersey · 0.1 MI E of US 206 · Structure no. 1900P28

Built
1942
83 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
365
2023 count
Owner
County
County Highway Agency

About this bridge

CR675 (degroat Rd) over Little Flat Brook is a steel stringer/multi-beam or girder carrying CR675 (degroat Rd) over Little Flat Brook in Sussex County, New Jersey. It was built in 1942, so it is 83 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 4 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.

It carries about 365 vehicles a day, roughly 5% of them trucks, projected to reach 446 by 2043. The structure is 39 ft (11.9 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR675 (degroat Rd)
CrossesLittle Flat Brook
Location0.1 MI E of US 206
RouteCounty Highway 675
Coordinates41.25235, -74.79967
Functional classRural Minor Collector

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
Deck4 PoorAdvanced section loss, deterioration, 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 protection7 GoodSome minor problems.
Last inspectionMarch 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating54 US tons
Inventory rating32 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span36 ft (11 m)
Deck width29 ft (8.8 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic365 (2023)
Projected traffic446 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$886,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR675 (degroat Rd) over Little Flat Brook built?

It was built in 1942, making it 83 years old in 2025.

What condition is CR675 (degroat Rd) over Little Flat Brook 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 March 2023.

How much traffic does CR675 (degroat Rd) over Little Flat Brook carry?

About 365 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is CR675 (degroat Rd) over Little Flat Brook?

The structure is 39 ft (11.9 m) long with a longest span of 36 ft (11 m) and a deck 29 ft wide.

Who owns CR675 (degroat Rd) over Little Flat Brook?

It is owned by the County Highway Agency.