US Bridges

I 20 over Big Black River Relief

Poor

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

Built
1994
31 years old
Condition
Poor
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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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
Coordinates32.35298, -90.62702
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. 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.