US Bridges

SR 178 over US 45

Fair

Lee County, Mississippi · SR178 over US 45 · Structure no. 31001780410884B

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
226 ft
4 main spans
Daily traffic
3,900
2023 count
Owner
State
State Highway Agency

About this bridge

SR 178 over US 45 is a concrete continuous box beam or girders - single or spread carrying SR 178 over US 45 in Lee County, Mississippi. It was built in 1975, so it is 50 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 3,900 vehicles a day, roughly 7% of them trucks, projected to reach 4,400 by 2043. The structure is 226 ft (69 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 178
CrossesUS 45
LocationSR178 over US 45
RouteState Highway 178
CountyLee County
StateMississippi
Coordinates34.27455, -88.7069
Functional classUrban Other Principal Arterial

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 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.3 US tons
Inventory rating22.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length226 ft (69 m)
Longest span67 ft (20.4 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2023)
Projected traffic4,400 by 2043
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 178 over US 45 built?

It was built in 1975, making it 50 years old in 2025.

What condition is SR 178 over US 45 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 178 over US 45 carry?

About 3,900 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 178 over US 45?

The structure is 226 ft (69 m) long with a longest span of 67 ft (20.4 m) and a deck 42 ft wide.

Who owns SR 178 over US 45?

It is owned by the State Highway Agency.