US Bridges

SR 481 over I 20

Fair

Scott County, Mississippi · SR 481 over I 20 · Structure no. 310048106201840

Built
1968
57 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
291 ft
2 main spans
Daily traffic
930
2023 count
Owner
State
State Highway Agency

About this bridge

SR 481 over I 20 is a concrete continuous box beam or girders - single or spread carrying SR 481 over I 20 in Scott County, Mississippi. It was built in 1968, so it is 57 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 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 930 vehicles a day, roughly 13% of them trucks, projected to reach 1,000 by 2043. The structure is 291 ft (88.7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 481
CrossesI 20
LocationSR 481 over I 20
RouteState Highway 481
CountyScott County
StateMississippi
Coordinates32.31573, -89.61461
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67.5 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length291 ft (88.7 m)
Longest span83 ft (25.3 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2023)
Projected traffic1,000 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 481 over I 20 built?

It was built in 1968, making it 57 years old in 2025.

What condition is SR 481 over I 20 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 December 2024.

How much traffic does SR 481 over I 20 carry?

About 930 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SR 481 over I 20?

The structure is 291 ft (88.7 m) long with a longest span of 83 ft (25.3 m) and a deck 32 ft wide.

Who owns SR 481 over I 20?

It is owned by the State Highway Agency.