US Bridges

I-20 Wbl over SR 15

Good

Greene County, Georgia · 1 MI NW of Siloam · Structure no. 000000013300290

Built
1968
57 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
187 ft
3 main spans
Daily traffic
142,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-20 Wbl over SR 15 is a steel stringer/multi-beam or girder carrying I-20 Wbl over SR 15 in Greene County, Georgia. It was built in 1968, so it is 57 years old, older than the Georgia average of 47.5 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 142,000 vehicles a day, roughly 1% of them trucks, projected to reach 40,935 by 2031. The structure is 187 ft (57 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-20 Wbl
CrossesSR 15
Location1 MI NW of Siloam
RouteInterstate 20
StateGeorgia
Coordinates33.54588, -83.09638
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length187 ft (57 m)
Longest span65 ft (19.8 m)
Deck width40 ft (12.3 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic142,000 (2024)
Projected traffic40,935 by 2031
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-20 Wbl over SR 15 built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-20 Wbl over SR 15 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 April 2024.

How much traffic does I-20 Wbl over SR 15 carry?

About 142,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-20 Wbl over SR 15?

The structure is 187 ft (57 m) long with a longest span of 65 ft (19.8 m) and a deck 40 ft wide.

Who owns I-20 Wbl over SR 15?

It is owned by the State Highway Agency.