US Bridges

SR1606 over Rocky River

Fair

Union County, North Carolina · 0.2 MI.N.JCT.SR1604 · Structure no. 000000001790009

Built
1980
45 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
326 ft
5 main spans
Daily traffic
1,100
2022 count
Owner
State
State Highway Agency

About this bridge

SR1606 over Rocky River is a prestressed concrete stringer/multi-beam or girder carrying SR1606 over Rocky River in Union County, North Carolina. It was built in 1980, so it is 45 years old, older 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 1,100 vehicles a day, roughly 7% of them trucks, projected to reach 2,200 by 2040. The structure is 326 ft (99.3 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR1606
CrossesRocky River
Location0.2 MI.N.JCT.SR1604
RouteState Highway 1606
CountyUnion County
StateNorth Carolina
Coordinates35.16987, -80.47272
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating52.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length326 ft (99.3 m)
Longest span64 ft (19.5 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2022)
Projected traffic2,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 SR1606 over Rocky River built?

It was built in 1980, making it 45 years old in 2025.

What condition is SR1606 over Rocky 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 2024.

How much traffic does SR1606 over Rocky River carry?

About 1,100 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1606 over Rocky River?

The structure is 326 ft (99.3 m) long with a longest span of 64 ft (19.5 m) and a deck 31 ft wide.

Who owns SR1606 over Rocky River?

It is owned by the State Highway Agency.