US Bridges

SR1704 over Cr. Off N. Flat River

Fair

Person County, North Carolina · 1.3 Mi. S. Jct. US158 · Structure no. 000000001450124

Built
1993
32 years old
Condition
Fair
inspected November 2023
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
250
2000 count
Owner
State
State Highway Agency

About this bridge

SR1704 over Cr. Off N. Flat River is a steel culvert carrying SR1704 over Cr. Off N. Flat River in Person County, North Carolina. It was built in 1993, so it is 32 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 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.

It carries about 250 vehicles a day, roughly 6% of them trucks, projected to reach 500 by 2040. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR1704
CrossesCr. Off N. Flat River
Location1.3 Mi. S. Jct. US158
RouteState Highway 1704
Coordinates36.34651, -78.96208
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating94.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2000)
Projected traffic500 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1704 over Cr. Off N. Flat River built?

It was built in 1993, making it 32 years old in 2025.

What condition is SR1704 over Cr. Off N. Flat River 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 2023.

How much traffic does SR1704 over Cr. Off N. Flat River carry?

About 250 vehicles per day (2000 count), of which roughly 6% are trucks.

How long is SR1704 over Cr. Off N. Flat River?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.3 m).

Who owns SR1704 over Cr. Off N. Flat River?

It is owned by the State Highway Agency.