US Bridges

SR 193 SB over Rattlesnake Bayou

Good

Mobile County, Alabama · 1.2 MI S I-10 · Structure no. 017172

Built
2000
25 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,188 ft
29 main spans
Daily traffic
12,510
2023 count
Owner
State
State Highway Agency

About this bridge

SR 193 SB over Rattlesnake Bayou is a prestressed concrete stringer/multi-beam or girder carrying SR 193 SB over Rattlesnake Bayou in Mobile County, Alabama. It was built in 2000, so it is 25 years old, younger than the Alabama average of 51.1 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 12,510 vehicles a day, roughly 9% of them trucks, projected to reach 18,765 by 2043. The structure is 1,188 ft (362.1 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 193 SB
CrossesRattlesnake Bayou
Location1.2 MI S I-10
RouteState Highway 193
CountyMobile County
StateAlabama
Coordinates30.58133, -88.14029
Functional classUrban Other Principal 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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.8 US tons
Inventory rating41.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans29
Design loadHS 20
Structure length1,188 ft (362.1 m)
Longest span41 ft (12.5 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,510 (2023)
Projected traffic18,765 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$11.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 193 SB over Rattlesnake Bayou built?

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

What condition is SR 193 SB over Rattlesnake 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 August 2024.

How much traffic does SR 193 SB over Rattlesnake Bayou carry?

About 12,510 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 193 SB over Rattlesnake Bayou?

The structure is 1,188 ft (362.1 m) long with a longest span of 41 ft (12.5 m) and a deck 42 ft wide.

Who owns SR 193 SB over Rattlesnake Bayou?

It is owned by the State Highway Agency.