US Bridges

18 TH ST over L*n RR

Fair

Jefferson County, Alabama · 18 TH ST over L*n RR · Structure no. 011552

Built
1976
49 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
150 ft
3 main spans
Daily traffic
2,500
2024 count
Owner
State
State Highway Agency

About this bridge

18 TH ST over L*n RR is a steel continuous stringer/multi-beam or girder carrying 18 TH ST over L*n RR in Jefferson County, Alabama. It was built in 1976, so it is 49 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 2,500 vehicles a day, roughly 5% of them trucks, projected to reach 5,000 by 2044. The structure is 150 ft (45.7 m) long and 50 ft wide.

Location

Open in Google Maps
Carries18 TH ST
CrossesL*n RR
Location18 TH ST over L*n RR
RouteCity Street 0
CountyJefferson County
StateAlabama
Coordinates33.40942, -86.96947
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.4 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span46 ft (14 m)
Deck width50 ft (15.2 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2024)
Projected traffic5,000 by 2044
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 18 TH ST over L*n RR built?

It was built in 1976, making it 49 years old in 2025.

What condition is 18 TH ST over L*n RR 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 March 2024.

How much traffic does 18 TH ST over L*n RR carry?

About 2,500 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 18 TH ST over L*n RR?

The structure is 150 ft (45.7 m) long with a longest span of 46 ft (14 m) and a deck 50 ft wide.

Who owns 18 TH ST over L*n RR?

It is owned by the State Highway Agency.