US Bridges

SR 570 over East Fork Amite River

Fair

Amite County, Mississippi · 1.1 MI E SR 569 · Structure no. 310057000300660

Built
1969
56 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
320 ft
8 main spans
Daily traffic
1,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR 570 over East Fork Amite River is a prestressed concrete stringer/multi-beam or girder carrying SR 570 over East Fork Amite River in Amite County, Mississippi. It was built in 1969, so it is 56 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 1,100 vehicles a day, roughly 11% of them trucks, projected to reach 1,100 by 2043. The structure is 320 ft (97.5 m) long and 31 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesSR 570
CrossesEast Fork Amite River
Location1.1 MI E SR 569
RouteState Highway 570
Coordinates31.30723, -90.63455
Functional classRural Major 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length320 ft (97.5 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,100 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 570 over East Fork Amite River built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR 570 over East Fork Amite River 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 February 2024.

How much traffic does SR 570 over East Fork Amite River carry?

About 1,100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 570 over East Fork Amite River?

The structure is 320 ft (97.5 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns SR 570 over East Fork Amite River?

It is owned by the State Highway Agency.