US Bridges

Nfa A448 (sa 5434) over Spring Creek

Fair

McMinn County, Tennessee · 2MI West of I75 · Structure no. 540A4480003

Built
1935
90 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
600
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A448 (sa 5434) over Spring Creek is a steel stringer/multi-beam or girder carrying Nfa A448 (sa 5434) over Spring Creek in McMinn County, Tennessee. It was built in 1935, so it is 90 years old, older 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 600 vehicles a day, roughly 2% of them trucks, projected to reach 960 by 2042. The structure is 32 ft (9.9 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNfa A448 (sa 5434)
CrossesSpring Creek
Location2MI West of I75
RouteCounty Highway 448
CountyMcMinn County
StateTennessee
Coordinates35.47163, -84.67619
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 15
Structure length32 ft (9.9 m)
Longest span23 ft (7 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2020)
Projected traffic960 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$100,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A448 (sa 5434) over Spring Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Nfa A448 (sa 5434) over Spring 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 September 2023.

How much traffic does Nfa A448 (sa 5434) over Spring Creek carry?

About 600 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A448 (sa 5434) over Spring Creek?

The structure is 32 ft (9.9 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.

Who owns Nfa A448 (sa 5434) over Spring Creek?

It is owned by the County Highway Agency.