US Bridges

Nfa A273 (sa 4628) over Laurel Creek

Fair

Johnson County, Tennessee · W Off SR91-N of Laurel Bl · Structure no. 460A2730001

Built
1992
33 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
40
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A273 (sa 4628) over Laurel Creek is a prestressed concrete box beam or girders - single or spread carrying Nfa A273 (sa 4628) over Laurel Creek in Johnson 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 fair condition with a lowest component rating of 5 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 40 vehicles a day, roughly 5% of them trucks, projected to reach 64 by 2042. The structure is 55 ft (16.8 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A273 (sa 4628)
CrossesLaurel Creek
LocationW Off SR91-N of Laurel Bl
RouteCounty Highway 273
CountyJohnson County
StateTennessee
Coordinates36.57695, -81.75726
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating65 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span52 ft (15.8 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2020)
Projected traffic64 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 A273 (sa 4628) over Laurel Creek built?

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

What condition is Nfa A273 (sa 4628) over Laurel 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 April 2024.

How much traffic does Nfa A273 (sa 4628) over Laurel Creek carry?

About 40 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Nfa A273 (sa 4628) over Laurel Creek?

The structure is 55 ft (16.8 m) long with a longest span of 52 ft (15.8 m) and a deck 24 ft wide.

Who owns Nfa A273 (sa 4628) over Laurel Creek?

It is owned by the County Highway Agency.