US Bridges

CO RD 39 NB over I-10

Fair

Mobile County, Alabama · 10.4 MI E Miss.State Line · Structure no. 018397

Built
2004
21 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
440 ft
4 main spans
Daily traffic
5,021
2022 count
Owner
State
State Highway Agency

About this bridge

CO RD 39 NB over I-10 is a prestressed concrete continuous stringer/multi-beam or girder carrying CO RD 39 NB over I-10 in Mobile County, Alabama. It was built in 2004, so it is 21 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 5,021 vehicles a day, roughly 4% of them trucks, projected to reach 7,532 by 2042. The structure is 440 ft (134.1 m) long and 55 ft wide.

Location

Open in Google Maps
CarriesCO RD 39 NB
CrossesI-10
Location10.4 MI E Miss.State Line
RouteCounty Highway 39
CountyMobile County
StateAlabama
Coordinates30.53784, -88.2399
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length440 ft (134.1 m)
Longest span120 ft (36.6 m)
Deck width55 ft (16.7 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,021 (2022)
Projected traffic7,532 by 2042
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$5.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was CO RD 39 NB over I-10 built?

It was built in 2004, making it 21 years old in 2025.

What condition is CO RD 39 NB over I-10 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 CO RD 39 NB over I-10 carry?

About 5,021 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is CO RD 39 NB over I-10?

The structure is 440 ft (134.1 m) long with a longest span of 120 ft (36.6 m) and a deck 55 ft wide.

Who owns CO RD 39 NB over I-10?

It is owned by the State Highway Agency.