US Bridges

Smith Co. 20A over Bch of Sullivans Creek

Good

Smith County, Mississippi · Sec 31 T10N R15W · Structure no. SA6500000000133

Built
1995
30 years old
Condition
Good
inspected September 2023
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
40
2021 count
Owner
County
County Highway Agency

About this bridge

Smith Co. 20A over Bch of Sullivans Creek is a concrete channel beam carrying Smith Co. 20A over Bch of Sullivans Creek in Smith County, Mississippi. It was built in 1995, so it is 30 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 40 vehicles a day, roughly 5% of them trucks, projected to reach 60 by 2043. The structure is 57 ft (17.4 m) long and 21 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesSmith Co. 20A
CrossesBch of Sullivans Creek
LocationSec 31 T10N R15W
RouteCounty Highway 156
Coordinates31.79039, -89.54312
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2021)
Projected traffic60 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$650,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Smith Co. 20A over Bch of Sullivans Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Smith Co. 20A over Bch of Sullivans 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 Smith Co. 20A over Bch of Sullivans Creek carry?

About 40 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Smith Co. 20A over Bch of Sullivans Creek?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 21 ft wide.

Who owns Smith Co. 20A over Bch of Sullivans Creek?

It is owned by the County Highway Agency.