US Bridges

US 51 over Unnamed Stream

Poor

Pike County, Mississippi · 1.6 MI N SR 48 · Structure no. 210005105701210

Built
1933
92 years old
Condition
Poor
inspected October 2024
Type
Slab
Concrete
Length
60 ft
3 main spans
Daily traffic
6,400
2023 count
Owner
State
State Highway Agency

About this bridge

US 51 over Unnamed Stream is a concrete slab 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,400 vehicles a day, roughly 8% of them trucks, projected to reach 6,400 by 2043. The structure is 60 ft (18.3 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesUS 51
CrossesUnnamed Stream
Location1.6 MI N SR 48
RouteU.S. Route 51
CountyPike County
StateMississippi
Coordinates31.16553, -90.45217
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.9 US tons
Inventory rating34.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length60 ft (18.3 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2023)
Projected traffic6,400 by 2043
Trucks8%
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$828 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 poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does US 51 over Unnamed Stream carry?

About 6,400 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 51 over Unnamed Stream?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns US 51 over Unnamed Stream?

It is owned by the State Highway Agency.