US Bridges

US1N over Haw River

Fair

Chatham County, North Carolina · .5 MI.S.JCT.SR1972 · Structure no. 000000000370478

Built
1997
28 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
391 ft
5 main spans
Daily traffic
14,750
2020 count
Owner
State
State Highway Agency

About this bridge

US1N over Haw River is a prestressed concrete continuous stringer/multi-beam or girder carrying US1N over Haw River in Chatham County, North Carolina. It was built in 1997, so it is 28 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 14,750 vehicles a day, roughly 14% of them trucks, projected to reach 29,500 by 2040. The structure is 391 ft (119.1 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS1N
CrossesHaw River
Location.5 MI.S.JCT.SR1972
RouteU.S. Route 1
Coordinates35.63211, -79.06101
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.9 US tons
Inventory rating52.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length391 ft (119.1 m)
Longest span83 ft (25.2 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,750 (2020)
Projected traffic29,500 by 2040
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 US1N over Haw River built?

It was built in 1997, making it 28 years old in 2025.

What condition is US1N over Haw 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 January 2024.

How much traffic does US1N over Haw River carry?

About 14,750 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is US1N over Haw River?

The structure is 391 ft (119.1 m) long with a longest span of 83 ft (25.2 m) and a deck 41 ft wide.

Who owns US1N over Haw River?

It is owned by the State Highway Agency.