US Bridges

I20 over Head Springs

Fair

St. Clair County, Alabama · 0.4 E CO RD 10 · Structure no. 007216

Built
1961
64 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
51,890
2024 count
Owner
State
State Highway Agency

About this bridge

I20 over Head Springs is a concrete culvert carrying I20 over Head Springs in St. Clair County, Alabama. It was built in 1961, so it is 64 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 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 51,890 vehicles a day, roughly 28% of them trucks, projected to reach 62,692 by 2044. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesI20
CrossesHead Springs
Location0.4 E CO RD 10
RouteInterstate 20
CountySt. Clair County
StateAlabama
Coordinates33.57833, -86.46889
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.2 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,890 (2024)
Projected traffic62,692 by 2044
Trucks28%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost$1.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I20 over Head Springs built?

It was built in 1961, making it 64 years old in 2025.

What condition is I20 over Head Springs 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 April 2024.

How much traffic does I20 over Head Springs carry?

About 51,890 vehicles per day (2024 count), of which roughly 28% are trucks.

How long is I20 over Head Springs?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m).

Who owns I20 over Head Springs?

It is owned by the State Highway Agency.