US Bridges

Nfa D627 over SR 29

FairPosted for load

Hamilton County, Tennessee · 4.33 Mi. N of SR-153 Jct. · Structure no. 33SR0290019

Built
1975
50 years old, rebuilt 1999
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
200 ft
2 main spans
Daily traffic
6,881
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa D627 over SR 29 is a concrete continuous box beam or girders - single or spread carrying Nfa D627 over SR 29 in Hamilton County, Tennessee. It was built in 1975 and reconstructed in 1999, so it is 50 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. Its operating status is: posted for load restriction.

It carries about 6,881 vehicles a day, roughly 4% of them trucks, projected to reach 10,701 by 2041. The structure is 200 ft (61 m) long and 57 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa D627
CrossesSR 29
Location4.33 Mi. N of SR-153 Jct.
RouteCity Street 5744
CountyHamilton County
StateTennessee
Coordinates35.23492, -85.19663
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length200 ft (61 m)
Longest span100 ft (30.5 m)
Deck width57 ft (17.4 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,881 (2021)
Projected traffic10,701 by 2041
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa D627 over SR 29 built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1999.

What condition is Nfa D627 over SR 29 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 November 2024.

How much traffic does Nfa D627 over SR 29 carry?

About 6,881 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Nfa D627 over SR 29?

The structure is 200 ft (61 m) long with a longest span of 100 ft (30.5 m) and a deck 57 ft wide.

Who owns Nfa D627 over SR 29?

It is owned by the State Highway Agency.