US Bridges

SR-163 over Perch Creek

Good

Mobile County, Alabama · 4.7 MI S I-10 · Structure no. 021498

Built
2021
4 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
360 ft
9 main spans
Daily traffic
7,778
2022 count
Owner
State
State Highway Agency

About this bridge

SR-163 over Perch Creek is a prestressed concrete stringer/multi-beam or girder carrying SR-163 over Perch Creek in Mobile County, Alabama. It was built in 2021, so it is 4 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 7,778 vehicles a day, roughly 2% of them trucks, projected to reach 11,667 by 2042. The structure is 360 ft (109.7 m) long and 52 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesSR-163
CrossesPerch Creek
Location4.7 MI S I-10
RouteState Highway 163
CountyMobile County
StateAlabama
Coordinates30.58032, -88.08325
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.3 US tons
Inventory rating64.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHL 93
Structure length360 ft (109.7 m)
Longest span40 ft (12.2 m)
Deck width52 ft (16 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,778 (2022)
Projected traffic11,667 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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$4.7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-163 over Perch Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is SR-163 over Perch Creek 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 September 2023.

How much traffic does SR-163 over Perch Creek carry?

About 7,778 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is SR-163 over Perch Creek?

The structure is 360 ft (109.7 m) long with a longest span of 40 ft (12.2 m) and a deck 52 ft wide.

Who owns SR-163 over Perch Creek?

It is owned by the State Highway Agency.