US Bridges

Rocks Road over Natchez Trace Parkway

Fair

Madison County, Mississippi · 5.9 Miles from Ms Route 4 · Structure no. 5570208P0000000

Built
1962
63 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Single or Spread
Concrete
Length
96 ft
1 main span
Daily traffic
2,080
2010 count
Owner
Federal
National Park Service

About this bridge

Rocks Road over Natchez Trace Parkway is a concrete box beam or girders - single or spread carrying Rocks Road over Natchez Trace Parkway in Madison County, Mississippi. It was built in 1962, so it is 63 years old, older than the Mississippi average of 38.9 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 2,080 vehicles a day, projected to reach 2,288 by 2030. The structure is 96 ft (29.3 m) long and 29 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesRocks Road
CrossesNatchez Trace Parkway
Location5.9 Miles from Ms Route 4
RouteFederal Lands Road 1
CountyMadison County
StateMississippi
Coordinates32.57103, -89.88883
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating62.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length96 ft (29.3 m)
Longest span96 ft (29.3 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,080 (2010)
Projected traffic2,288 by 2030
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$255,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rocks Road over Natchez Trace Parkway built?

It was built in 1962, making it 63 years old in 2025.

What condition is Rocks Road over Natchez Trace Parkway 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 March 2024.

How much traffic does Rocks Road over Natchez Trace Parkway carry?

About 2,080 vehicles per day (2010 count).

How long is Rocks Road over Natchez Trace Parkway?

The structure is 96 ft (29.3 m) long with a longest span of 96 ft (29.3 m) and a deck 29 ft wide.

Who owns Rocks Road over Natchez Trace Parkway?

It is owned by the National Park Service.