US Bridges

I 20 over Big Black River Relief

Fair

Hinds County, Mississippi · 0.2 MI E Warren Cl · Structure no. 11000200250179B

Built
1994
31 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
222 ft
1 main span
Daily traffic
18,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 20 over Big Black River Relief is a prestressed concrete stringer/multi-beam or girder carrying I 20 over Big Black River Relief in Hinds County, Mississippi. It was built in 1994, so it is 31 years old, younger 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 18,500 vehicles a day, roughly 36% of them trucks, projected to reach 18,500 by 2043. The structure is 222 ft (67.7 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 20
CrossesBig Black River Relief
Location0.2 MI E Warren Cl
RouteInterstate 20
Coordinates32.35281, -90.62779
Functional classRural Principal Arterial - Interstate

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating30.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span60 ft (18.3 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,500 (2023)
Projected traffic18,500 by 2043
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 20 over Big Black River Relief built?

It was built in 1994, making it 31 years old in 2025.

What condition is I 20 over Big Black River Relief 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 July 2024.

How much traffic does I 20 over Big Black River Relief carry?

About 18,500 vehicles per day (2023 count), of which roughly 36% are trucks.

How long is I 20 over Big Black River Relief?

The structure is 222 ft (67.7 m) long with a longest span of 60 ft (18.3 m) and a deck 45 ft wide.

Who owns I 20 over Big Black River Relief?

It is owned by the State Highway Agency.