US Bridges

FAS 312 over Long Savannah Creek

GoodPosted for load

Hamilton County, Tennessee · 1.47 Mi. E of SR-58 Jct. · Structure no. 33S43080003

Built
1951
74 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
5,086
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 312 over Long Savannah Creek is a concrete continuous slab carrying FAS 312 over Long Savannah Creek in Hamilton County, Tennessee. It was built in 1951, so it is 74 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. Its operating status is: posted for load restriction.

It carries about 5,086 vehicles a day, roughly 3% of them trucks, projected to reach 8,138 by 2042. The structure is 103 ft (31.4 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 312
CrossesLong Savannah Creek
Location1.47 Mi. E of SR-58 Jct.
RouteState Highway 312
CountyHamilton County
StateTennessee
Coordinates35.17722, -85.03715
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating19.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length103 ft (31.4 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,086 (2021)
Projected traffic8,138 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$541,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 312 over Long Savannah Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is FAS 312 over Long Savannah 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 October 2024.

How much traffic does FAS 312 over Long Savannah Creek carry?

About 5,086 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAS 312 over Long Savannah Creek?

The structure is 103 ft (31.4 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns FAS 312 over Long Savannah Creek?

It is owned by the State Highway Agency.