US Bridges

Killian Hill RD over Yellow River

Good

Gwinnett County, Georgia · 4 MI SE of Lilburn · Structure no. 000000013552630

Built
2012
13 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
265 ft
3 main spans
Daily traffic
19,700
2024 count
Owner
County
County Highway Agency

About this bridge

Killian Hill RD over Yellow River is a prestressed concrete stringer/multi-beam or girder carrying Killian Hill RD over Yellow River in Gwinnett 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 19,700 vehicles a day, roughly 2% of them trucks, projected to reach 31,500 by 2030. The structure is 265 ft (80.8 m) long and 86 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesKillian Hill RD
CrossesYellow River
Location4 MI SE of Lilburn
RouteCounty Highway 9317
StateGeorgia
Coordinates33.8533, -84.07865
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.9 US tons
Inventory rating40.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length265 ft (80.8 m)
Longest span115 ft (35.1 m)
Deck width86 ft (26.1 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,700 (2024)
Projected traffic31,500 by 2030
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$35.3 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Killian Hill RD over Yellow River built?

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

What condition is Killian Hill RD 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 January 2024.

How much traffic does Killian Hill RD over Yellow River carry?

About 19,700 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Killian Hill RD over Yellow River?

The structure is 265 ft (80.8 m) long with a longest span of 115 ft (35.1 m) and a deck 86 ft wide.

Who owns Killian Hill RD over Yellow River?

It is owned by the County Highway Agency.