US Bridges

SR 491 over Owl Creek Relief

Good

Neshoba County, Mississippi · 3.8 MI N SR 482 · Structure no. 310049105002250

Built
1997
28 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
92 ft
3 main spans
Daily traffic
290
2023 count
Owner
State
State Highway Agency

About this bridge

SR 491 over Owl Creek Relief is a prestressed concrete stringer/multi-beam or girder carrying SR 491 over Owl Creek Relief in Neshoba 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 290 vehicles a day, roughly 11% of them trucks, projected to reach 290 by 2043. The structure is 92 ft (27.9 m) long and 32 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesSR 491
CrossesOwl Creek Relief
Location3.8 MI N SR 482
RouteState Highway 491
Coordinates32.85321, -88.94745
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating46.7 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 width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic290 (2023)
Projected traffic290 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 491 over Owl Creek Relief built?

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

What condition is SR 491 over Owl 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 September 2023.

How much traffic does SR 491 over Owl Creek Relief carry?

About 290 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 491 over Owl Creek Relief?

The structure is 92 ft (27.9 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns SR 491 over Owl Creek Relief?

It is owned by the State Highway Agency.