US Bridges

Cogbil ST over Lil Cahaba Rv

PoorClosed to traffic

Jefferson County, Alabama · Cogbil ST * Ashville RD · Structure no. 001638

Built
1937
88 years old
Condition
Poor
inspected July 2014
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
46 ft
2 main spans
Daily traffic
75
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cogbil ST over Lil Cahaba Rv is a steel continuous stringer/multi-beam or girder carrying Cogbil ST over Lil Cahaba Rv in Jefferson County, Alabama. It was built in 1937, so it is 88 years old, older than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 75 vehicles a day, projected to reach 105 by 2035. The structure is 46 ft (14 m) long and 12 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

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CarriesCogbil ST
CrossesLil Cahaba Rv
LocationCogbil ST * Ashville RD
RouteCity Street 0
CountyJefferson County
StateAlabama
Coordinates33.548, -86.5464
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2014
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length46 ft (14 m)
Longest span30 ft (9.1 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2015)
Projected traffic105 by 2035
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$188,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cogbil ST over Lil Cahaba Rv built?

It was built in 1937, making it 88 years old in 2025.

What condition is Cogbil ST over Lil Cahaba Rv in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2014.

How much traffic does Cogbil ST over Lil Cahaba Rv carry?

About 75 vehicles per day (2015 count).

How long is Cogbil ST over Lil Cahaba Rv?

The structure is 46 ft (14 m) long with a longest span of 30 ft (9.1 m) and a deck 12 ft wide.

Who owns Cogbil ST over Lil Cahaba Rv?

It is owned by the City or Municipal Highway Agency.