US Bridges

CR 645 over Muddy Run

Fair

Salem County, New Jersey · 4.7 MI E of Nj 77 · Structure no. 1701252

Built
1941
84 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
54 ft
2 main spans
Daily traffic
3,300
2023 count
Owner
County
County Highway Agency

About this bridge

CR 645 over Muddy Run is a concrete slab carrying CR 645 over Muddy Run in Salem County, New Jersey. It was built in 1941, so it is 84 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 3,300 vehicles a day, roughly 3% of them trucks, projected to reach 4,027 by 2043. The structure is 54 ft (16.5 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 645
CrossesMuddy Run
Location4.7 MI E of Nj 77
RouteCounty Highway 645
CountySalem County
StateNew Jersey
Coordinates39.5068, -75.12914
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length54 ft (16.5 m)
Longest span26 ft (7.9 m)
Deck width42 ft (12.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic4,027 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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 645 over Muddy Run built?

It was built in 1941, making it 84 years old in 2025.

What condition is CR 645 over Muddy 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 August 2023.

How much traffic does CR 645 over Muddy Run carry?

About 3,300 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR 645 over Muddy Run?

The structure is 54 ft (16.5 m) long with a longest span of 26 ft (7.9 m) and a deck 42 ft wide.

Who owns CR 645 over Muddy Run?

It is owned by the County Highway Agency.