US Bridges

SR3408 over French Broad River

Poor

Buncombe County, North Carolina · 0.01 MI.E.JCT.SR1338 · Structure no. 000000000210743

Built
1987
38 years old
Condition
Poor
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
507 ft
6 main spans
Daily traffic
4,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR3408 over French Broad River is a prestressed concrete stringer/multi-beam or girder carrying SR3408 over French Broad River in Buncombe County, North Carolina. It was built in 1987, so it is 38 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 4,100 vehicles a day, roughly 7% of them trucks, projected to reach 8,200 by 2040. The structure is 507 ft (154.5 m) long and 31 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR3408
CrossesFrench Broad River
Location0.01 MI.E.JCT.SR1338
RouteState Highway 3408
Coordinates35.58956, -82.57157
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no 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 rating79.9 US tons
Inventory rating36.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length507 ft (154.5 m)
Longest span85 ft (25.9 m)
Deck width31 ft (9.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2023)
Projected traffic8,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR3408 over French Broad River built?

It was built in 1987, making it 38 years old in 2025.

What condition is SR3408 over French Broad River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.

How much traffic does SR3408 over French Broad River carry?

About 4,100 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR3408 over French Broad River?

The structure is 507 ft (154.5 m) long with a longest span of 85 ft (25.9 m) and a deck 31 ft wide.

Who owns SR3408 over French Broad River?

It is owned by the State Highway Agency.