US Bridges

US 51 over Unnamed Stream

Good

Pike County, Mississippi · 2.6 MI N SR 48 · Structure no. 210005105701330

Built
1933
92 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Concrete
Length
32 ft
1 main span
Daily traffic
5,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 51 over Unnamed Stream is a concrete tee beam carrying US 51 over Unnamed Stream in Pike County, Mississippi. It was built in 1933, so it is 92 years old, older 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 5,900 vehicles a day, roughly 11% of them trucks, projected to reach 5,900 by 2043. The structure is 32 ft (9.8 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 51
CrossesUnnamed Stream
Location2.6 MI N SR 48
RouteU.S. Route 51
Coordinates31.18181, -90.45055
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2023)
Projected traffic5,900 by 2043
Trucks11%
Lanes on structure20
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$391 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 51 over Unnamed Stream built?

It was built in 1933, making it 92 years old in 2025.

What condition is US 51 over Unnamed Stream 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 October 2024.

How much traffic does US 51 over Unnamed Stream carry?

About 5,900 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 51 over Unnamed Stream?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 25 ft wide.

Who owns US 51 over Unnamed Stream?

It is owned by the State Highway Agency.