US Bridges

Co. Road 4101 over Trib Big Black River

Good

Attala County, Mississippi · Sec 1 T13N R 4E B · Structure no. SA0400000000020

Built
1991
34 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
3 main spans
Daily traffic
40
2021 count
Owner
County
County Highway Agency

About this bridge

Co. Road 4101 over Trib Big Black River is a prestressed concrete stringer/multi-beam or girder carrying Co. Road 4101 over Trib Big Black River in Attala County, Mississippi. It was built in 1991, so it is 34 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 40 vehicles a day, roughly 8% of them trucks, projected to reach 135 by 2030. The structure is 140 ft (42.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCo. Road 4101
CrossesTrib Big Black River
LocationSec 1 T13N R 4E B
RouteCounty Highway 1624
Coordinates33.0052, -89.8463
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.7 US tons
Inventory rating42.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span60 ft (18.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2021)
Projected traffic135 by 2030
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$1.1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co. Road 4101 over Trib Big Black River built?

It was built in 1991, making it 34 years old in 2025.

What condition is Co. Road 4101 over Trib Big Black River 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 March 2023.

How much traffic does Co. Road 4101 over Trib Big Black River carry?

About 40 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Co. Road 4101 over Trib Big Black River?

The structure is 140 ft (42.7 m) long with a longest span of 60 ft (18.3 m) and a deck 31 ft wide.

Who owns Co. Road 4101 over Trib Big Black River?

It is owned by the County Highway Agency.