US Bridges

Nfa 1124 (sa 4729) over Swan Pond Creek

Good

Knox County, Tennessee · Strawberry Plains RD · Structure no. 47S24080003

Built
1955
70 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
33 ft
2 main spans
Daily traffic
4,259
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1124 (sa 4729) over Swan Pond Creek is a concrete continuous culvert carrying Nfa 1124 (sa 4729) over Swan Pond Creek in Knox County, Tennessee. It was built in 1955, so it is 70 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,259 vehicles a day, roughly 3% of them trucks, projected to reach 6,624 by 2040. The structure is 33 ft (10.1 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa 1124 (sa 4729)
CrossesSwan Pond Creek
LocationStrawberry Plains RD
RouteCounty Highway 1124
Coordinates35.9793, -83.83237
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length33 ft (10.1 m)
Longest span15 ft (4.6 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,259 (2021)
Projected traffic6,624 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 1124 (sa 4729) over Swan Pond Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Nfa 1124 (sa 4729) over Swan Pond Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Nfa 1124 (sa 4729) over Swan Pond Creek carry?

About 4,259 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1124 (sa 4729) over Swan Pond Creek?

The structure is 33 ft (10.1 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns Nfa 1124 (sa 4729) over Swan Pond Creek?

It is owned by the County Highway Agency.