US Bridges

FAU 3774 347574B over CSX Railroad

Good

Knox County, Tennessee · In Knoxville · Structure no. 47037740005

Built
1950
75 years old
Condition
Good
inspected March 2024
Type
Tee Beam
Concrete
Length
122 ft
3 main spans
Daily traffic
10,389
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 3774 347574B over CSX Railroad is a concrete tee beam carrying FAU 3774 347574B over CSX Railroad in Knox County, Tennessee. It was built in 1950, so it is 75 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 10,389 vehicles a day, roughly 3% of them trucks, projected to reach 16,622 by 2042. The structure is 122 ft (37.2 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFAU 3774 347574B
CrossesCSX Railroad
LocationIn Knoxville
RouteCity Street 3774
Coordinates35.9596, -83.9476
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length122 ft (37.2 m)
Longest span40 ft (12.3 m)
Deck width52 ft (16 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,389 (2021)
Projected traffic16,622 by 2042
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 3774 347574B over CSX Railroad built?

It was built in 1950, making it 75 years old in 2025.

What condition is FAU 3774 347574B over CSX Railroad 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 March 2024.

How much traffic does FAU 3774 347574B over CSX Railroad carry?

About 10,389 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAU 3774 347574B over CSX Railroad?

The structure is 122 ft (37.2 m) long with a longest span of 40 ft (12.3 m) and a deck 52 ft wide.

Who owns FAU 3774 347574B over CSX Railroad?

It is owned by the City or Municipal Highway Agency.