US Bridges

Nfa 1888 (sa 6317) over Mcadoo Creek

FairPosted for load

Montgomery County, Tennessee · 11 M. Se. Clarksville. · Structure no. 63018880003

Built
1987
38 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
968
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1888 (sa 6317) over Mcadoo Creek is a steel stringer/multi-beam or girder carrying Nfa 1888 (sa 6317) over Mcadoo Creek in Montgomery County, Tennessee. It was built in 1987, so it is 38 years old, younger than the Tennessee average of 47.4 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. Its operating status is: posted for load restriction.

It carries about 968 vehicles a day, roughly 3% of them trucks, projected to reach 1,552 by 2041. The structure is 32 ft (9.8 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNfa 1888 (sa 6317)
CrossesMcadoo Creek
Location11 M. Se. Clarksville.
RouteCounty Highway 1888
CountyMontgomery County
StateTennessee
Coordinates36.4795, -87.17825
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width30 ft (9 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic968 (2021)
Projected traffic1,552 by 2041
Trucks3%
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$259,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1888 (sa 6317) over Mcadoo Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nfa 1888 (sa 6317) over Mcadoo Creek 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 2024.

How much traffic does Nfa 1888 (sa 6317) over Mcadoo Creek carry?

About 968 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1888 (sa 6317) over Mcadoo Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 30 ft wide.

Who owns Nfa 1888 (sa 6317) over Mcadoo Creek?

It is owned by the County Highway Agency.