US Bridges

Co. Road 3122 over Zilpha Creek

Good

Attala County, Mississippi · Sec 7 T16N R 8E B · Structure no. SA0400000000155

Built
2006
19 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
41 ft
2 main spans
Daily traffic
105
2024 count
Owner
County
County Highway Agency

About this bridge

Co. Road 3122 over Zilpha Creek is a concrete culvert carrying Co. Road 3122 over Zilpha Creek in Attala County, Mississippi. It was built in 2006, so it is 19 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 105 vehicles a day, roughly 8% of them trucks, projected to reach 120 by 2044. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesCo. Road 3122
CrossesZilpha Creek
LocationSec 7 T16N R 8E B
RouteCounty Highway 664
Coordinates33.26061, -89.50911
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating46.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105 (2024)
Projected traffic120 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$450,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co. Road 3122 over Zilpha Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Co. Road 3122 over Zilpha 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 April 2024.

How much traffic does Co. Road 3122 over Zilpha Creek carry?

About 105 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Co. Road 3122 over Zilpha Creek?

The structure is 41 ft (12.5 m) long with a longest span of 20 ft (6.1 m).

Who owns Co. Road 3122 over Zilpha Creek?

It is owned by the County Highway Agency.