US Bridges

I - 459 So Ramp over Cox Springs Branch

Good

Jefferson County, Alabama · Ramp I-459 So.To 59 So. · Structure no. 020300

Built
1978
47 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
6,371
2025 count
Owner
State
State Highway Agency

About this bridge

I - 459 So Ramp over Cox Springs Branch is a concrete culvert carrying I - 459 So Ramp over Cox Springs Branch in Jefferson 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,371 vehicles a day, roughly 26% of them trucks, projected to reach 7,882 by 2045. The structure is 30 ft (9.1 m) long and 999 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI - 459 So Ramp
CrossesCox Springs Branch
LocationRamp I-459 So.To 59 So.
RouteInterstate 459
CountyJefferson County
StateAlabama
Coordinates33.33693, -87.04
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.8 US tons
Inventory rating29.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span10 ft (3 m)
Deck width999 ft (304.5 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic6,371 (2025)
Projected traffic7,882 by 2045
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$926,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I - 459 So Ramp over Cox Springs Branch built?

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

What condition is I - 459 So Ramp over Cox Springs Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does I - 459 So Ramp over Cox Springs Branch carry?

About 6,371 vehicles per day (2025 count), of which roughly 26% are trucks.

How long is I - 459 So Ramp over Cox Springs Branch?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3 m) and a deck 999 ft wide.

Who owns I - 459 So Ramp over Cox Springs Branch?

It is owned by the State Highway Agency.