US Bridges

W 21st Ave over W 1st ST Drainage

Fair

Baldwin County, Alabama · E of Gu SH Post Office · Structure no. 015042

Built
1988
37 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
540
2025 count
Owner
City
City or Municipal Highway Agency

About this bridge

W 21st Ave over W 1st ST Drainage is a concrete culvert carrying W 21st Ave over W 1st ST Drainage in Baldwin County, Alabama. It was built in 1988, so it is 37 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 540 vehicles a day, roughly 1% of them trucks, projected to reach 810 by 2045. The structure is 25 ft (7.6 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW 21st Ave
CrossesW 1st ST Drainage
LocationE of Gu SH Post Office
RouteCity Street 0
CountyBaldwin County
StateAlabama
Coordinates30.27449, -87.68868
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width54 ft (16.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2025)
Projected traffic810 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$476,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was W 21st Ave over W 1st ST Drainage built?

It was built in 1988, making it 37 years old in 2025.

What condition is W 21st Ave over W 1st ST Drainage 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 February 2025.

How much traffic does W 21st Ave over W 1st ST Drainage carry?

About 540 vehicles per day (2025 count), of which roughly 1% are trucks.

How long is W 21st Ave over W 1st ST Drainage?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m) and a deck 54 ft wide.

Who owns W 21st Ave over W 1st ST Drainage?

It is owned by the City or Municipal Highway Agency.