US Bridges

Irwin Bridge Road over Yellow River

Good

Rockdale County, Georgia · 2.5 MI N of Conyers · Structure no. 000000024750320

Built
2012
13 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
412 ft
7 main spans
Daily traffic
7,320
2024 count
Owner
County
County Highway Agency

About this bridge

Irwin Bridge Road over Yellow River is a concrete stringer/multi-beam or girder carrying Irwin Bridge Road over Yellow River in Rockdale County, Georgia. It was built in 2012, so it is 13 years old, younger 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 7,320 vehicles a day, roughly 5% of them trucks, projected to reach 6,645 by 2031. The structure is 412 ft (125.6 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesIrwin Bridge Road
CrossesYellow River
Location2.5 MI N of Conyers
RouteCounty Highway 9334
StateGeorgia
Coordinates33.70329, -84.02249
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating34 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length412 ft (125.6 m)
Longest span112 ft (34.1 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,320 (2024)
Projected traffic6,645 by 2031
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Irwin Bridge Road over Yellow River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Irwin Bridge Road over Yellow River 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 May 2023.

How much traffic does Irwin Bridge Road over Yellow River carry?

About 7,320 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Irwin Bridge Road over Yellow River?

The structure is 412 ft (125.6 m) long with a longest span of 112 ft (34.1 m) and a deck 42 ft wide.

Who owns Irwin Bridge Road over Yellow River?

It is owned by the County Highway Agency.