US Bridges

Co. Road 3122 over Bch of Zilpha Creek

Good

Attala County, Mississippi · Sec 21 T16N R 6E B · Structure no. SA0400000000138

Built
2001
24 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
220 ft
5 main spans
Daily traffic
230
2024 count
Owner
County
County Highway Agency

About this bridge

Co. Road 3122 over Bch of Zilpha Creek is a concrete slab carrying Co. Road 3122 over Bch of Zilpha Creek in Attala 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 230 vehicles a day, roughly 8% of them trucks, projected to reach 345 by 2044. The structure is 220 ft (67 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCo. Road 3122
CrossesBch of Zilpha Creek
LocationSec 21 T16N R 6E B
RouteCounty Highway 661
Coordinates33.23766, -89.69632
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.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating85.8 US tons
Inventory rating39.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length220 ft (67 m)
Longest span60 ft (18.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2024)
Projected traffic345 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$1.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co. Road 3122 over Bch of Zilpha Creek built?

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

What condition is Co. Road 3122 over Bch of 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 Bch of Zilpha Creek carry?

About 230 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Co. Road 3122 over Bch of Zilpha Creek?

The structure is 220 ft (67 m) long with a longest span of 60 ft (18.2 m) and a deck 31 ft wide.

Who owns Co. Road 3122 over Bch of Zilpha Creek?

It is owned by the County Highway Agency.