US Bridges

SR 305 over SR 178 and Bnrr

Fair

DeSoto County, Mississippi · 1.4 MI N US 78 · Structure no. 310030501702380

Built
2001
24 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
853 ft
5 main spans
Daily traffic
31,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR 305 over SR 178 and Bnrr is a steel continuous stringer/multi-beam or girder carrying SR 305 over SR 178 and Bnrr in DeSoto County, Mississippi. It was built in 2001, so it is 24 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 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 31,000 vehicles a day, roughly 3% of them trucks, projected to reach 33,000 by 2043. The structure is 853 ft (260 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 305
CrossesSR 178 and Bnrr
Location1.4 MI N US 78
RouteState Highway 305
CountyDeSoto County
StateMississippi
Coordinates34.96518, -89.83043
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.7 US tons
Inventory rating42.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length853 ft (260 m)
Longest span60 ft (18.2 m)
Deck width81 ft (24.8 m)
Roadway width79 ft (24 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,000 (2023)
Projected traffic33,000 by 2043
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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 305 over SR 178 and Bnrr built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR 305 over SR 178 and Bnrr 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 June 2023.

How much traffic does SR 305 over SR 178 and Bnrr carry?

About 31,000 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is SR 305 over SR 178 and Bnrr?

The structure is 853 ft (260 m) long with a longest span of 60 ft (18.2 m) and a deck 81 ft wide.

Who owns SR 305 over SR 178 and Bnrr?

It is owned by the State Highway Agency.