US Bridges

SR 13 over Unnamed Stream

Good

Marion County, Mississippi · 2.0 MI S US 98 · Structure no. 310001304604480

Built
1947
78 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
4 main spans
Daily traffic
3,800
2023 count
Owner
State
State Highway Agency

About this bridge

SR 13 over Unnamed Stream is a steel stringer/multi-beam or girder carrying SR 13 over Unnamed Stream in Marion County, Mississippi. It was built in 1947, so it is 78 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 3,800 vehicles a day, roughly 14% of them trucks, projected to reach 3,800 by 2043. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

Location

Open in Google Maps
CarriesSR 13
CrossesUnnamed Stream
Location2.0 MI S US 98
RouteState Highway 13
CountyMarion County
StateMississippi
Coordinates31.20933, -89.80716
Functional classRural Minor Arterial

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 inspectionJanuary 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.6 US tons
Inventory rating27.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2023)
Projected traffic3,800 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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$1,000 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 13 over Unnamed Stream built?

It was built in 1947, making it 78 years old in 2025.

What condition is SR 13 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 January 2024.

How much traffic does SR 13 over Unnamed Stream carry?

About 3,800 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 13 over Unnamed Stream?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns SR 13 over Unnamed Stream?

It is owned by the State Highway Agency.