US Bridges

Nfa 929 (sa 5116) over Rock House Creek

Fair

Lewis County, Tennessee · 5 M. S. Hohenwald. · Structure no. 510A1100005

Built
1989
36 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
97
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 929 (sa 5116) over Rock House Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa 929 (sa 5116) over Rock House Creek in Lewis County, Tennessee. It was built in 1989, so it is 36 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.

It carries about 97 vehicles a day, roughly 2% of them trucks, projected to reach 334 by 2042. The structure is 120 ft (36.6 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa 929 (sa 5116)
CrossesRock House Creek
Location5 M. S. Hohenwald.
RouteCounty Highway 929
CountyLewis County
StateTennessee
Coordinates35.47208, -87.58845
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating35.4 US tons
Inventory rating23.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97 (2021)
Projected traffic334 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$796,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 929 (sa 5116) over Rock House Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Nfa 929 (sa 5116) over Rock House 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 June 2023.

How much traffic does Nfa 929 (sa 5116) over Rock House Creek carry?

About 97 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Nfa 929 (sa 5116) over Rock House Creek?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Nfa 929 (sa 5116) over Rock House Creek?

It is owned by the County Highway Agency.