US Bridges

Tanner Williams RD over Big Creek Lake

FairPosted for load

Mobile County, Alabama · 3 MI E of Wilmer RD · Structure no. 003178

Built
1948
77 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
238 ft
7 main spans
Daily traffic
4,650
2023 count
Owner
Local
Other Local Agency

About this bridge

Tanner Williams RD over Big Creek Lake is a concrete tee beam carrying Tanner Williams RD over Big Creek Lake in Mobile County, Alabama. It was built in 1948, so it is 77 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 4,650 vehicles a day, roughly 6% of them trucks, projected to reach 6,910 by 2043. The structure is 238 ft (72.5 m) long and 37 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesTanner Williams RD
CrossesBig Creek Lake
Location3 MI E of Wilmer RD
RouteCounty Highway 0
CountyMobile County
StateAlabama
Coordinates30.71275, -88.32663
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating31 US tons
Inventory rating18.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckNot applicable
Main spans7
Design loadUnknown
Structure length238 ft (72.5 m)
Longest span34 ft (10.4 m)
Deck width37 ft (11.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,650 (2023)
Projected traffic6,910 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local 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$2.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tanner Williams RD over Big Creek Lake built?

It was built in 1948, making it 77 years old in 2025.

What condition is Tanner Williams RD over Big Creek Lake 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 Tanner Williams RD over Big Creek Lake carry?

About 4,650 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Tanner Williams RD over Big Creek Lake?

The structure is 238 ft (72.5 m) long with a longest span of 34 ft (10.4 m) and a deck 37 ft wide.

Who owns Tanner Williams RD over Big Creek Lake?

It is owned by the Other Local Agency and maintained by the County Highway Agency.