US Bridges

SR 146 over Mill Creek

Fair

Jackson County, Alabama · 0.7 MI W JCT SR79 * SR146 · Structure no. 006393

Built
1958
67 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
585
2022 count
Owner
State
State Highway Agency

About this bridge

SR 146 over Mill Creek is a concrete continuous culvert carrying SR 146 over Mill Creek in Jackson County, Alabama. It was built in 1958, so it is 67 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 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 585 vehicles a day, roughly 2% of them trucks, projected to reach 819 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 42.3 mi (68 km).

Location

Open in Google Maps
CarriesSR 146
CrossesMill Creek
Location0.7 MI W JCT SR79 * SR146
RouteState Highway 146
CountyJackson County
StateAlabama
Coordinates34.85339, -86.11422
Functional classRural 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98 US tons
Inventory rating75.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic585 (2022)
Projected traffic819 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.3 mi (68 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$488,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 146 over Mill Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is SR 146 over Mill 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 December 2023.

How much traffic does SR 146 over Mill Creek carry?

About 585 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is SR 146 over Mill Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns SR 146 over Mill Creek?

It is owned by the State Highway Agency.