US Bridges

Nfa 1127 over Poplar Springs Branch

Fair

Marion County, Tennessee · In South Pittsburg · Structure no. 58SR0270001

Built
1928
97 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
3,612
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa 1127 over Poplar Springs Branch is a concrete continuous culvert carrying Nfa 1127 over Poplar Springs Branch in Marion County, Tennessee. It was built in 1928, so it is 97 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 3,612 vehicles a day, roughly 1% of them trucks, projected to reach 6,528 by 2040. The structure is 21 ft (6.3 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesNfa 1127
CrossesPoplar Springs Branch
LocationIn South Pittsburg
RouteCity Street 1127
CountyMarion County
StateTennessee
Coordinates34.9921, -85.72114
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width52 ft (15.9 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,612 (2021)
Projected traffic6,528 by 2040
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 1127 over Poplar Springs Branch built?

It was built in 1928, making it 97 years old in 2025.

What condition is Nfa 1127 over Poplar Springs Branch 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 2024.

How much traffic does Nfa 1127 over Poplar Springs Branch carry?

About 3,612 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 1127 over Poplar Springs Branch?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 52 ft wide.

Who owns Nfa 1127 over Poplar Springs Branch?

It is owned by the City or Municipal Highway Agency.