US Bridges

Davenport ST over Bayou De Duce

Fair

Mobile County, Alabama · 200 E Ala 188 · Structure no. 011985

Built
1978
47 years old
Condition
Fair
inspected August 2023
Type
Channel Beam
Concrete
Length
136 ft
4 main spans
Daily traffic
1,925
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Davenport ST over Bayou De Duce is a concrete channel beam carrying Davenport ST over Bayou De Duce in Mobile County, Alabama. It was built in 1978, so it is 47 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 1,925 vehicles a day, roughly 8% of them trucks, projected to reach 2,598 by 2043. The structure is 136 ft (41.5 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesDavenport ST
CrossesBayou De Duce
Location200 E Ala 188
RouteCity Street 0
CountyMobile County
StateAlabama
Coordinates30.4071, -88.2469
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.4 US tons
Inventory rating37.3 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadH 15
Structure length136 ft (41.5 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,925 (2023)
Projected traffic2,598 by 2043
Trucks8%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$926,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Davenport ST over Bayou De Duce built?

It was built in 1978, making it 47 years old in 2025.

What condition is Davenport ST over Bayou De Duce 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 August 2023.

How much traffic does Davenport ST over Bayou De Duce carry?

About 1,925 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Davenport ST over Bayou De Duce?

The structure is 136 ft (41.5 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns Davenport ST over Bayou De Duce?

It is owned by the City or Municipal Highway Agency.