US Bridges

FAP 108 over Mill Creek

Fair

Grundy County, Tennessee · .1 MI from Gross Rd. · Structure no. 31SR1080001

Built
1939
86 years old, rebuilt 2001
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
152 ft
3 main spans
Daily traffic
1,051
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 108 over Mill Creek is a steel continuous stringer/multi-beam or girder carrying FAP 108 over Mill Creek in Grundy County, Tennessee. It was built in 1939 and reconstructed in 2001, so it is 86 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,051 vehicles a day, roughly 5% of them trucks, projected to reach 1,888 by 2040. The structure is 152 ft (46.3 m) long and 38 ft wide. If it were closed, the detour would be 75.8 mi (122 km).

Location

Open in Google Maps
CarriesFAP 108
CrossesMill Creek
Location.1 MI from Gross Rd.
RouteState Highway 108
CountyGrundy County
StateTennessee
Coordinates35.35013, -85.56592
Functional classRural Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span51 ft (15.5 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,051 (2021)
Projected traffic1,888 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed75.8 mi (122 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 108 over Mill Creek built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2001.

What condition is FAP 108 over Mill 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 May 2024.

How much traffic does FAP 108 over Mill Creek carry?

About 1,051 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAP 108 over Mill Creek?

The structure is 152 ft (46.3 m) long with a longest span of 51 ft (15.5 m) and a deck 38 ft wide.

Who owns FAP 108 over Mill Creek?

It is owned by the State Highway Agency.