US Bridges

South Main Road over Riles Creek

Good

Simpson County, Mississippi · Sec 22 T 1N R 4E B · Structure no. SA6400000000023

Built
2001
24 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
270 ft
5 main spans
Daily traffic
100
2020 count
Owner
County
County Highway Agency

About this bridge

South Main Road over Riles Creek is a prestressed concrete stringer/multi-beam or girder carrying South Main Road over Riles Creek in Simpson 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 8% of them trucks, projected to reach 150 by 2040. The structure is 270 ft (82.3 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouth Main Road
CrossesRiles Creek
LocationSec 22 T 1N R 4E B
RouteCounty Highway 175
Coordinates31.91292, -89.87824
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.6 US tons
Inventory rating38.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span110 ft (33.6 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic150 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 South Main Road over Riles Creek built?

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

What condition is South Main Road over Riles Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does South Main Road over Riles Creek carry?

About 100 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is South Main Road over Riles Creek?

The structure is 270 ft (82.3 m) long with a longest span of 110 ft (33.6 m) and a deck 31 ft wide.

Who owns South Main Road over Riles Creek?

It is owned by the County Highway Agency.