US Bridges

SR 481 over Unnamed Stream

Fair

Smith County, Mississippi · 2.3 MI N SR 35 · Structure no. 310048106500230

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Channel Beam
Concrete
Length
20 ft
1 main span
Daily traffic
380
2023 count
Owner
State
State Highway Agency

About this bridge

SR 481 over Unnamed Stream is a concrete channel beam carrying SR 481 over Unnamed Stream in Smith County, Mississippi. It was built in 1984, so it is 41 years old, older 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 5 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 380 vehicles a day, roughly 11% of them trucks, projected to reach 380 by 2043. The structure is 20 ft (6.1 m) long and 23 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesSR 481
CrossesUnnamed Stream
Location2.3 MI N SR 35
RouteState Highway 481
CountySmith County
StateMississippi
Coordinates32.13541, -89.55028
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span19 ft (5.8 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic380 (2023)
Projected traffic380 by 2043
Trucks11%
Lanes on structure20
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$279 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 481 over Unnamed Stream built?

It was built in 1984, making it 41 years old in 2025.

What condition is SR 481 over Unnamed Stream 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 September 2024.

How much traffic does SR 481 over Unnamed Stream carry?

About 380 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 481 over Unnamed Stream?

The structure is 20 ft (6.1 m) long with a longest span of 19 ft (5.8 m) and a deck 23 ft wide.

Who owns SR 481 over Unnamed Stream?

It is owned by the State Highway Agency.