US Bridges

Nfa A718 over Richland Creek

Good

Obion County, Tennessee · 3.2 MI SE JCT SR21&SR183 · Structure no. 660A7180001

Built
1992
33 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
86 ft
6 main spans
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A718 over Richland Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa A718 over Richland Creek in Obion County, Tennessee. It was built in 1992, so it is 33 years old, younger than the Tennessee average of 47.4 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 40 vehicles a day, roughly 4% of them trucks, projected to reach 64 by 2041. The structure is 86 ft (26.2 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A718
CrossesRichland Creek
Location3.2 MI SE JCT SR21&SR183
RouteCounty Highway 718
CountyObion County
StateTennessee
Coordinates36.30575, -89.25066
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span43 ft (13.1 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2020)
Projected traffic64 by 2041
Trucks4%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A718 over Richland Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Nfa A718 over Richland 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 March 2023.

How much traffic does Nfa A718 over Richland Creek carry?

About 40 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A718 over Richland Creek?

The structure is 86 ft (26.2 m) long with a longest span of 43 ft (13.1 m) and a deck 25 ft wide.

Who owns Nfa A718 over Richland Creek?

It is owned by the County Highway Agency.