US Bridges

Demetropolis RD over Spring Branch

Fair

Mobile County, Alabama · 0.3 MI N Halls Millrd · Structure no. 013772

Built
1949
76 years old, rebuilt 1986
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
4,730
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Demetropolis RD over Spring Branch is a concrete culvert carrying Demetropolis RD over Spring Branch in Mobile County, Alabama. It was built in 1949 and reconstructed in 1986, so it is 76 years old, older 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 4,730 vehicles a day, roughly 4% of them trucks, projected to reach 7,095 by 2043. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesDemetropolis RD
CrossesSpring Branch
Location0.3 MI N Halls Millrd
RouteCity Street 0
CountyMobile County
StateAlabama
Coordinates30.61697, -88.15701
Functional classUrban Minor Arterial

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.2 US tons
Inventory rating46.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,730 (2023)
Projected traffic7,095 by 2043
Trucks4%
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$618,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Demetropolis RD over Spring Branch built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1986.

What condition is Demetropolis RD over Spring Branch 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 November 2023.

How much traffic does Demetropolis RD over Spring Branch carry?

About 4,730 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Demetropolis RD over Spring Branch?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m).

Who owns Demetropolis RD over Spring Branch?

It is owned by the City or Municipal Highway Agency.