US Bridges

SR 46 over Underwood Creek

Fair

Clay County, Mississippi · 6.2 MI N SR 50 · Structure no. 310004601301700

Built
1992
33 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
137 ft
3 main spans
Daily traffic
710
2023 count
Owner
State
State Highway Agency

About this bridge

SR 46 over Underwood Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 46 over Underwood Creek in Clay County, Mississippi. It was built in 1992, so it is 33 years old, younger than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 710 vehicles a day, roughly 11% of them trucks, projected to reach 710 by 2043. The structure is 137 ft (41.7 m) long and 33 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesSR 46
CrossesUnderwood Creek
Location6.2 MI N SR 50
RouteState Highway 46
CountyClay County
StateMississippi
Coordinates33.64221, -88.84341
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 rating65.7 US tons
Inventory rating36.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length137 ft (41.7 m)
Longest span45 ft (13.7 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic710 (2023)
Projected traffic710 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 46 over Underwood Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is SR 46 over Underwood Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does SR 46 over Underwood Creek carry?

About 710 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 46 over Underwood Creek?

The structure is 137 ft (41.7 m) long with a longest span of 45 ft (13.7 m) and a deck 33 ft wide.

Who owns SR 46 over Underwood Creek?

It is owned by the State Highway Agency.