US Bridges

SR 21 over Owl Creek

Good

Neshoba County, Mississippi · 0.9 MI N SR 491 · Structure no. 310002105005410

Built
1996
29 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
342 ft
1 main span
Daily traffic
1,300
2023 count
Owner
State
State Highway Agency

About this bridge

SR 21 over Owl Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 21 over Owl Creek in Neshoba County, Mississippi. It was built in 1996, so it is 29 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 1,300 vehicles a day, roughly 14% of them trucks, projected to reach 1,300 by 2043. The structure is 342 ft (104.2 m) long and 39 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

CarriesSR 21
CrossesOwl Creek
Location0.9 MI N SR 491
RouteState Highway 21
Coordinates32.88056, -88.94255
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+7 approach)
Design loadHS 20
Structure length342 ft (104.2 m)
Longest span60 ft (18.3 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,300 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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 21 over Owl Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is SR 21 over Owl 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 September 2023.

How much traffic does SR 21 over Owl Creek carry?

About 1,300 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 21 over Owl Creek?

The structure is 342 ft (104.2 m) long with a longest span of 60 ft (18.3 m) and a deck 39 ft wide.

Who owns SR 21 over Owl Creek?

It is owned by the State Highway Agency.