US Bridges

Shell Belt RD W over Unamed Stream

Fair

Mobile County, Alabama · 2MI SW Al 188 · Structure no. 020373

Built
2010
15 years old
Condition
Fair
inspected April 2024
Type
Channel Beam
Concrete
Length
34 ft
1 main span
Daily traffic
969
2024 count
Owner
County
County Highway Agency

About this bridge

Shell Belt RD W over Unamed Stream is a concrete channel beam carrying Shell Belt RD W over Unamed Stream in Mobile County, Alabama. It was built in 2010, so it is 15 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 969 vehicles a day, roughly 6% of them trucks, projected to reach 2,699 by 2044. The structure is 34 ft (10.4 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesShell Belt RD W
CrossesUnamed Stream
Location2MI SW Al 188
RouteCounty Highway 8407
CountyMobile County
StateAlabama
Coordinates30.38944, -88.26503
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81.7 US tons
Inventory rating49.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic969 (2024)
Projected traffic2,699 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$361,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Shell Belt RD W over Unamed Stream built?

It was built in 2010, making it 15 years old in 2025.

What condition is Shell Belt RD W over Unamed Stream 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 April 2024.

How much traffic does Shell Belt RD W over Unamed Stream carry?

About 969 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Shell Belt RD W over Unamed Stream?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 28 ft wide.

Who owns Shell Belt RD W over Unamed Stream?

It is owned by the County Highway Agency.