US Bridges

Smithtown Road over North Mosquito Creek

Good

Decatur County, Georgia · 14.7 MI SW of Attapulgus · Structure no. 000000008750340

Built
1965
60 years old, rebuilt 2003
Condition
Good
inspected September 2023
Type
Channel Beam
Prestressed Concrete
Length
140 ft
7 main spans
Daily traffic
190
2024 count
Owner
County
County Highway Agency

About this bridge

Smithtown Road over North Mosquito Creek is a prestressed concrete channel beam carrying Smithtown Road over North Mosquito Creek in Decatur County, Georgia. It was built in 1965 and reconstructed in 2003, so it is 60 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 190 vehicles a day, roughly 1% of them trucks, projected to reach 735 by 2032. The structure is 140 ft (42.7 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSmithtown Road
CrossesNorth Mosquito Creek
Location14.7 MI SW of Attapulgus
RouteCounty Highway 177
StateGeorgia
Coordinates30.70928, -84.72414
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating30 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans7
Design loadH 15
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2024)
Projected traffic735 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$821,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Smithtown Road over North Mosquito Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2003.

What condition is Smithtown Road over North Mosquito 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 September 2023.

How much traffic does Smithtown Road over North Mosquito Creek carry?

About 190 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Smithtown Road over North Mosquito Creek?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns Smithtown Road over North Mosquito Creek?

It is owned by the County Highway Agency.