US Bridges

SR 18 (ebl) over I-185AT 34.11N(EXIT 34)

Fair

Harris County, Georgia · 7.5 MI W of Pine Mountai · Structure no. 000000014500060

Built
1977
48 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
340 ft
4 main spans
Daily traffic
4,080
2024 count
Owner
State
State Highway Agency

About this bridge

SR 18 (ebl) over I-185AT 34.11N(EXIT 34) is a steel continuous stringer/multi-beam or girder carrying SR 18 (ebl) over I-185AT 34.11N(EXIT 34) in Harris County, Georgia. It was built in 1977, so it is 48 years old, older 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 4,080 vehicles a day, roughly 1% of them trucks, projected to reach 2,280 by 2032. The structure is 340 ft (103.6 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 18 (ebl)
CrossesI-185AT 34.11N(EXIT 34)
Location7.5 MI W of Pine Mountai
RouteState Highway 18
CountyHarris County
StateGeorgia
Coordinates32.8571, -84.97911
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.9 US tons
Inventory rating39.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length340 ft (103.6 m)
Longest span127 ft (38.7 m)
Deck width44 ft (13.3 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,080 (2024)
Projected traffic2,280 by 2032
Trucks1%
Lanes on structure2
Traffic directionOne-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$2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 18 (ebl) over I-185AT 34.11N(EXIT 34) built?

It was built in 1977, making it 48 years old in 2025.

What condition is SR 18 (ebl) over I-185AT 34.11N(EXIT 34) 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 October 2023.

How much traffic does SR 18 (ebl) over I-185AT 34.11N(EXIT 34) carry?

About 4,080 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 18 (ebl) over I-185AT 34.11N(EXIT 34)?

The structure is 340 ft (103.6 m) long with a longest span of 127 ft (38.7 m) and a deck 44 ft wide.

Who owns SR 18 (ebl) over I-185AT 34.11N(EXIT 34)?

It is owned by the State Highway Agency.