US Bridges

US 31 NB over CSX Rr/Bay Minette

Fair

Baldwin County, Alabama · 0.8 MI N JCT CO RD 138 · Structure no. 009965

Built
1969
56 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
197 ft
1 main span
Daily traffic
25,432
2022 count
Owner
State
State Highway Agency

About this bridge

US 31 NB over CSX Rr/Bay Minette is a steel stringer/multi-beam or girder carrying US 31 NB over CSX Rr/Bay Minette in Baldwin County, Alabama. It was built in 1969, so it is 56 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 25,432 vehicles a day, roughly 7% of them trucks, projected to reach 38,148 by 2042. The structure is 197 ft (60 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 31 NB
CrossesCSX Rr/Bay Minette
Location0.8 MI N JCT CO RD 138
RouteU.S. Route 31
CountyBaldwin County
StateAlabama
Coordinates30.87564, -87.78267
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47.4 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHS 20
Structure length197 ft (60 m)
Longest span61 ft (18.6 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,432 (2022)
Projected traffic38,148 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$2.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 31 NB over CSX Rr/Bay Minette built?

It was built in 1969, making it 56 years old in 2025.

What condition is US 31 NB over CSX Rr/Bay Minette 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 June 2023.

How much traffic does US 31 NB over CSX Rr/Bay Minette carry?

About 25,432 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is US 31 NB over CSX Rr/Bay Minette?

The structure is 197 ft (60 m) long with a longest span of 61 ft (18.6 m) and a deck 43 ft wide.

Who owns US 31 NB over CSX Rr/Bay Minette?

It is owned by the State Highway Agency.