US Bridges

Conception ST RD over Three Mile Creek

Fair

Mobile County, Alabama · 0.9 Mile S of Craft HWY · Structure no. 017857

Built
2000
25 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
306 ft
1 main span
Daily traffic
1,653
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Conception ST RD over Three Mile Creek is a prestressed concrete box beam or girders - multiple carrying Conception ST RD over Three Mile Creek in Mobile County, Alabama. It was built in 2000, so it is 25 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 5 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 1,653 vehicles a day, roughly 4% of them trucks, projected to reach 2,044 by 2044. The structure is 306 ft (93.3 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesConception ST RD
CrossesThree Mile Creek
Location0.9 Mile S of Craft HWY
RouteCity Street 0
CountyMobile County
StateAlabama
Coordinates30.71873, -88.06559
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.6 US tons
Inventory rating34.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20
Structure length306 ft (93.3 m)
Longest span60 ft (18.3 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,653 (2024)
Projected traffic2,044 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$2.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Conception ST RD over Three Mile Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Conception ST RD over Three Mile 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 February 2024.

How much traffic does Conception ST RD over Three Mile Creek carry?

About 1,653 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Conception ST RD over Three Mile Creek?

The structure is 306 ft (93.3 m) long with a longest span of 60 ft (18.3 m) and a deck 37 ft wide.

Who owns Conception ST RD over Three Mile Creek?

It is owned by the City or Municipal Highway Agency.