US Bridges

FAU 4125 over Branch

Good

Hamilton County, Tennessee · 2 MI East of SR 29 · Structure no. 330Z0030003

Built
1955
70 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
3,004
2021 count
Owner
County
County Highway Agency

About this bridge

FAU 4125 over Branch is a concrete culvert carrying FAU 4125 over Branch in Hamilton 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 3,004 vehicles a day, roughly 1% of them trucks, projected to reach 4,806 by 2042. The structure is 21 ft (6.4 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesFAU 4125
CrossesBranch
Location2 MI East of SR 29
RouteCounty Highway 4125
CountyHamilton County
StateTennessee
Coordinates35.19023, -85.20326
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,004 (2021)
Projected traffic4,806 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$146,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 4125 over Branch built?

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

What condition is FAU 4125 over Branch 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 January 2025.

How much traffic does FAU 4125 over Branch carry?

About 3,004 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is FAU 4125 over Branch?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 26 ft wide.

Who owns FAU 4125 over Branch?

It is owned by the County Highway Agency.