US Bridges

SR 490 over Nanih Waiya Creek Relief

Good

Winston County, Mississippi · 1.7 MI N SR 397 · Structure no. 310049008001080

Built
1992
33 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
92 ft
3 main spans
Daily traffic
670
2023 count
Owner
State
State Highway Agency

About this bridge

SR 490 over Nanih Waiya Creek Relief is a prestressed concrete stringer/multi-beam or girder carrying SR 490 over Nanih Waiya Creek Relief in Winston County, Mississippi. It was built in 1992, so it is 33 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 670 vehicles a day, roughly 11% of them trucks, projected to reach 670 by 2043. The structure is 92 ft (27.9 m) long and 31 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesSR 490
CrossesNanih Waiya Creek Relief
Location1.7 MI N SR 397
RouteState Highway 490
Coordinates32.99093, -88.89496
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Last inspectionApril 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.4 US tons
Inventory rating37.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (27.9 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2023)
Projected traffic670 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 490 over Nanih Waiya Creek Relief built?

It was built in 1992, making it 33 years old in 2025.

What condition is SR 490 over Nanih Waiya Creek Relief 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 April 2024.

How much traffic does SR 490 over Nanih Waiya Creek Relief carry?

About 670 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 490 over Nanih Waiya Creek Relief?

The structure is 92 ft (27.9 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns SR 490 over Nanih Waiya Creek Relief?

It is owned by the State Highway Agency.