US Bridges

Grandbay Wilmer S over Millers Creek

Fair

Mobile County, Alabama · 3.1 MI S CO RD 56 · Structure no. 015086

Built
1990
35 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
246 ft
6 main spans
Daily traffic
6,069
2024 count
Owner
County
County Highway Agency

About this bridge

Grandbay Wilmer S over Millers Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Grandbay Wilmer S over Millers Creek in Mobile County, Alabama. It was built in 1990, so it is 35 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,069 vehicles a day, roughly 4% of them trucks, projected to reach 9,018 by 2044. The structure is 246 ft (75 m) long and 37 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesGrandbay Wilmer S
CrossesMillers Creek
Location3.1 MI S CO RD 56
RouteCounty Highway 0
CountyMobile County
StateAlabama
Coordinates30.6054, -88.35235
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.5 US tons
Inventory rating39.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length246 ft (75 m)
Longest span41 ft (12.5 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,069 (2024)
Projected traffic9,018 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$2.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Grandbay Wilmer S over Millers Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Grandbay Wilmer S over Millers Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Grandbay Wilmer S over Millers Creek carry?

About 6,069 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Grandbay Wilmer S over Millers Creek?

The structure is 246 ft (75 m) long with a longest span of 41 ft (12.5 m) and a deck 37 ft wide.

Who owns Grandbay Wilmer S over Millers Creek?

It is owned by the County Highway Agency.