US Bridges

Lamar Road over Rocky Creek

Good

Bibb County, Georgia · 5 MI W of Macon Cty Lmts · Structure no. 000000002150020

Built
1939
86 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
2 main spans
Daily traffic
5,200
2024 count
Owner
County
County Highway Agency

About this bridge

Lamar Road over Rocky Creek is a steel stringer/multi-beam or girder carrying Lamar Road over Rocky Creek in Bibb County, Georgia. It was built in 1939, so it is 86 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 5,200 vehicles a day, roughly 1% of them trucks, projected to reach 5,730 by 2032. The structure is 70 ft (21.3 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLamar Road
CrossesRocky Creek
Location5 MI W of Macon Cty Lmts
RouteCounty Highway 61
CountyBibb County
StateGeorgia
Coordinates32.8669, -83.78326
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating25.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length70 ft (21.3 m)
Longest span35 ft (10.7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,200 (2024)
Projected traffic5,730 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$410,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lamar Road over Rocky Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is Lamar Road over Rocky Creek 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 November 2023.

How much traffic does Lamar Road over Rocky Creek carry?

About 5,200 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Lamar Road over Rocky Creek?

The structure is 70 ft (21.3 m) long with a longest span of 35 ft (10.7 m) and a deck 27 ft wide.

Who owns Lamar Road over Rocky Creek?

It is owned by the County Highway Agency.