US Bridges

SR 161 over Hennesseys Bayou

Good

Warren County, Mississippi · Sec 17 T15N R 3E · Structure no. SA7500000000103

Built
2000
25 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
342 ft
1 main span
Daily traffic
4,500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

SR 161 over Hennesseys Bayou is a prestressed concrete stringer/multi-beam or girder carrying SR 161 over Hennesseys Bayou in Warren County, Mississippi. It was built in 2000, so it is 25 years old, younger 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 4,500 vehicles a day, roughly 3% of them trucks, projected to reach 6,000 by 2044. The structure is 342 ft (104.3 m) long and 55 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSR 161
CrossesHennesseys Bayou
LocationSec 17 T15N R 3E
RouteCity Street 0
Coordinates32.28117, -90.91728
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.3 US tons
Inventory rating36.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHS 20
Structure length342 ft (104.3 m)
Longest span100 ft (30.5 m)
Deck width55 ft (16.7 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2022)
Projected traffic6,000 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$3.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 161 over Hennesseys Bayou built?

It was built in 2000, making it 25 years old in 2025.

What condition is SR 161 over Hennesseys Bayou 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 March 2024.

How much traffic does SR 161 over Hennesseys Bayou carry?

About 4,500 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is SR 161 over Hennesseys Bayou?

The structure is 342 ft (104.3 m) long with a longest span of 100 ft (30.5 m) and a deck 55 ft wide.

Who owns SR 161 over Hennesseys Bayou?

It is owned by the City or Municipal Highway Agency.