US Bridges

Co.Road 485 over Smith Creek

FairPosted for load

Lafayette County, Mississippi · Sec 31 T10S R 2W · Structure no. SA3600000000152

Built
1997
28 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
57 ft
3 main spans
Daily traffic
80
2014 count
Owner
County
County Highway Agency

About this bridge

Co.Road 485 over Smith Creek is a wood or timber stringer/multi-beam or girder carrying Co.Road 485 over Smith Creek in Lafayette County, Mississippi. It was built in 1997, so it is 28 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. Its operating status is: posted for load restriction.

It carries about 80 vehicles a day, projected to reach 120 by 2034. The structure is 57 ft (17.4 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCo.Road 485
CrossesSmith Creek
LocationSec 31 T10S R 2W
RouteCounty Highway 99
CountyLafayette County
StateMississippi
Coordinates34.16808, -89.43883
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.1 US tons
Inventory rating16.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2014)
Projected traffic120 by 2034
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$194,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Co.Road 485 over Smith Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Co.Road 485 over Smith Creek 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 August 2024.

How much traffic does Co.Road 485 over Smith Creek carry?

About 80 vehicles per day (2014 count).

How long is Co.Road 485 over Smith Creek?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.

Who owns Co.Road 485 over Smith Creek?

It is owned by the County Highway Agency.