US Bridges

Nfa 2187 (sa 8912) over Mountain Creek

FairPosted for load

Warren County, Tennessee · 3MI South of Dekalb Co. · Structure no. 89021870003

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
130 ft
4 main spans
Daily traffic
539
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2187 (sa 8912) over Mountain Creek is a concrete tee beam carrying Nfa 2187 (sa 8912) over Mountain Creek in Warren 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 539 vehicles a day, roughly 3% of them trucks, projected to reach 816 by 2042. The structure is 130 ft (39.6 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNfa 2187 (sa 8912)
CrossesMountain Creek
Location3MI South of Dekalb Co.
RouteCounty Highway 2187
CountyWarren County
StateTennessee
Coordinates35.81428, -85.8575
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating21.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length130 ft (39.6 m)
Longest span40 ft (12.2 m)
Deck width27 ft (8.1 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic539 (2021)
Projected traffic816 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$292,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2187 (sa 8912) over Mountain Creek built?

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

What condition is Nfa 2187 (sa 8912) over Mountain Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Nfa 2187 (sa 8912) over Mountain Creek carry?

About 539 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2187 (sa 8912) over Mountain Creek?

The structure is 130 ft (39.6 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.

Who owns Nfa 2187 (sa 8912) over Mountain Creek?

It is owned by the County Highway Agency.