US Bridges

Grandbay Wilmer S over Simmons Branch

Good

Mobile County, Alabama · 0.4 MI N W CO 11 · Structure no. 015087

Built
1990
35 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
3,183
2024 count
Owner
County
County Highway Agency

About this bridge

Grandbay Wilmer S over Simmons Branch is a concrete continuous culvert carrying Grandbay Wilmer S over Simmons Branch 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 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 3,183 vehicles a day, roughly 3% of them trucks, projected to reach 4,730 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesGrandbay Wilmer S
CrossesSimmons Branch
Location0.4 MI N W CO 11
RouteCounty Highway 13
CountyMobile County
StateAlabama
Coordinates30.62362, -88.36326
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating76.7 US tons
Inventory rating46 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,183 (2024)
Projected traffic4,730 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$447,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Grandbay Wilmer S over Simmons Branch built?

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

What condition is Grandbay Wilmer S over Simmons Branch 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 June 2024.

How much traffic does Grandbay Wilmer S over Simmons Branch carry?

About 3,183 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Grandbay Wilmer S over Simmons Branch?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Grandbay Wilmer S over Simmons Branch?

It is owned by the County Highway Agency.