US Bridges

SR 438 over Deep Slough Tributary

Good

Washington County, Mississippi · 2.7 MI E US 61 · Structure no. 310043807601230

Built
1996
29 years old
Condition
Good
inspected November 2024
Type
Slab
Prestressed Concrete
Length
160 ft
4 main spans
Daily traffic
520
2023 count
Owner
State
State Highway Agency

About this bridge

SR 438 over Deep Slough Tributary is a prestressed concrete slab carrying SR 438 over Deep Slough Tributary in Washington 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 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 520 vehicles a day, roughly 11% of them trucks, projected to reach 520 by 2043. The structure is 160 ft (48.8 m) long and 37 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesSR 438
CrossesDeep Slough Tributary
Location2.7 MI E US 61
RouteState Highway 438
Coordinates33.27023, -90.82005
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
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 rating67.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic520 (2023)
Projected traffic520 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 438 over Deep Slough Tributary built?

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

What condition is SR 438 over Deep Slough Tributary 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 November 2024.

How much traffic does SR 438 over Deep Slough Tributary carry?

About 520 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 438 over Deep Slough Tributary?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 37 ft wide.

Who owns SR 438 over Deep Slough Tributary?

It is owned by the State Highway Agency.