US Bridges

Nfa A528 over Cobb Creek

Good

Washington County, Tennessee · Creekmore Drive · Structure no. 900A5280003

Built
1995
30 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
5,990
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A528 over Cobb Creek is a concrete continuous culvert carrying Nfa A528 over Cobb Creek in Washington County, Tennessee. It was built in 1995, so it is 30 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 5,990 vehicles a day, roughly 2% of them trucks, projected to reach 9,584 by 2042. The structure is 24 ft (7.3 m) long and 106 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A528
CrossesCobb Creek
LocationCreekmore Drive
RouteCity Street 528
Coordinates36.3603, -82.37912
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span7 ft (2.1 m)
Deck width106 ft (32.2 m)
Roadway width106 ft (32.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,990 (2020)
Projected traffic9,584 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$257,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A528 over Cobb Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Nfa A528 over Cobb 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 June 2024.

How much traffic does Nfa A528 over Cobb Creek carry?

About 5,990 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A528 over Cobb Creek?

The structure is 24 ft (7.3 m) long with a longest span of 7 ft (2.1 m) and a deck 106 ft wide.

Who owns Nfa A528 over Cobb Creek?

It is owned by the City or Municipal Highway Agency.