US Bridges

US 45 over SR 6 and SR 178

Fair

Lee County, Mississippi · US 45 over SR 6 · Structure no. 21000450412248A

Built
1976
49 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
282 ft
3 main spans
Daily traffic
16,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 45 over SR 6 and SR 178 is a concrete continuous box beam or girders - single or spread carrying US 45 over SR 6 and SR 178 in Lee County, Mississippi. It was built in 1976, so it is 49 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 16,500 vehicles a day, roughly 14% of them trucks, projected to reach 19,000 by 2043. The structure is 282 ft (86 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 45
CrossesSR 6 and SR 178
LocationUS 45 over SR 6
RouteU.S. Route 45
CountyLee County
StateMississippi
Coordinates34.25785, -88.69399
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length282 ft (86 m)
Longest span128 ft (39 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2023)
Projected traffic19,000 by 2043
Trucks14%
Lanes on structure20
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 US 45 over SR 6 and SR 178 built?

It was built in 1976, making it 49 years old in 2025.

What condition is US 45 over SR 6 and SR 178 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 October 2024.

How much traffic does US 45 over SR 6 and SR 178 carry?

About 16,500 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 45 over SR 6 and SR 178?

The structure is 282 ft (86 m) long with a longest span of 128 ft (39 m) and a deck 47 ft wide.

Who owns US 45 over SR 6 and SR 178?

It is owned by the State Highway Agency.