US Bridges

Nfa 1145 over Branch

Good

Hamilton County, Tennessee · .2 MI East of I75 · Structure no. 330E0620001

Built
1987
38 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
8,884
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1145 over Branch is a concrete continuous culvert carrying Nfa 1145 over Branch in Hamilton County, Tennessee. It was built in 1987, so it is 38 years old, younger 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 8,884 vehicles a day, roughly 4% of them trucks, projected to reach 15,120 by 2040. The structure is 21 ft (6.3 m) long and 34 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesNfa 1145
CrossesBranch
Location.2 MI East of I75
RouteCounty Highway 1145
Coordinates35.10463, -85.04965
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,884 (2021)
Projected traffic15,120 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$127,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1145 over Branch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nfa 1145 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 February 2024.

How much traffic does Nfa 1145 over Branch carry?

About 8,884 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Nfa 1145 over Branch?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns Nfa 1145 over Branch?

It is owned by the County Highway Agency.