US Bridges

SR 315 over I-185 @18.83N (exit 19)

Fair

Harris County, Georgia · 9 MI SW of Hamilton · Structure no. 000000014500310

Built
1978
47 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
310 ft
4 main spans
Daily traffic
8,610
2024 count
Owner
State
State Highway Agency

About this bridge

SR 315 over I-185 @18.83N (exit 19) is a steel continuous stringer/multi-beam or girder carrying SR 315 over I-185 @18.83N (exit 19) in Harris County, Georgia. It was built in 1978, so it is 47 years old, younger than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,610 vehicles a day, roughly 1% of them trucks, projected to reach 7,980 by 2032. The structure is 310 ft (94.5 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 315
CrossesI-185 @18.83N (exit 19)
Location9 MI SW of Hamilton
RouteState Highway 315
CountyHarris County
StateGeorgia
Coordinates32.6626, -84.98064
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating36.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length310 ft (94.5 m)
Longest span117 ft (35.7 m)
Deck width50 ft (15.2 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,610 (2024)
Projected traffic7,980 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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$1.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 315 over I-185 @18.83N (exit 19) built?

It was built in 1978, making it 47 years old in 2025.

What condition is SR 315 over I-185 @18.83N (exit 19) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does SR 315 over I-185 @18.83N (exit 19) carry?

About 8,610 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 315 over I-185 @18.83N (exit 19)?

The structure is 310 ft (94.5 m) long with a longest span of 117 ft (35.7 m) and a deck 50 ft wide.

Who owns SR 315 over I-185 @18.83N (exit 19)?

It is owned by the State Highway Agency.