US Bridges

I-20 Wbl over NS Rr. (733146T)

Good

Morgan County, Georgia · 2.9 MI S of Madison · Structure no. 000000021100300

Built
1968
57 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
141 ft
3 main spans
Daily traffic
74,400
2024 count
Owner
State
State Highway Agency

About this bridge

I-20 Wbl over NS Rr. (733146T) is a steel continuous stringer/multi-beam or girder carrying I-20 Wbl over NS Rr. (733146T) in Morgan 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 74,400 vehicles a day, roughly 1% of them trucks, projected to reach 47,715 by 2031. The structure is 141 ft (43 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-20 Wbl
CrossesNS Rr. (733146T)
Location2.9 MI S of Madison
RouteInterstate 20
StateGeorgia
Coordinates33.55802, -83.49172
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 inspectionSeptember 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 rating61 US tons
Inventory rating35.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length141 ft (43 m)
Longest span53 ft (16.2 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74,400 (2024)
Projected traffic47,715 by 2031
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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$826,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-20 Wbl over NS Rr. (733146T) built?

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

What condition is I-20 Wbl over NS Rr. (733146T) 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 September 2024.

How much traffic does I-20 Wbl over NS Rr. (733146T) carry?

About 74,400 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-20 Wbl over NS Rr. (733146T)?

The structure is 141 ft (43 m) long with a longest span of 53 ft (16.2 m) and a deck 42 ft wide.

Who owns I-20 Wbl over NS Rr. (733146T)?

It is owned by the State Highway Agency.