US Bridges

SR1728 over Vehicle Underpass

Good

Wake County, North Carolina · 0.9 Mi. E. SR1664 · Structure no. 000000001830503

Built
1969
56 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete Continuous
Length
47 ft
3 main spans
Daily traffic
38,000
2019 count
Owner
State
State Highway Agency

About this bridge

SR1728 over Vehicle Underpass is a concrete continuous culvert carrying SR1728 over Vehicle Underpass in Wake County, North Carolina. It was built in 1969, so it is 56 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 38,000 vehicles a day, roughly 12% of them trucks, projected to reach 76,000 by 2040. The structure is 47 ft (14.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR1728
CrossesVehicle Underpass
Location0.9 Mi. E. SR1664
RouteState Highway 1728
Coordinates35.80312, -78.69142
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length47 ft (14.3 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,000 (2019)
Projected traffic76,000 by 2040
Trucks12%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1728 over Vehicle Underpass built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR1728 over Vehicle Underpass in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does SR1728 over Vehicle Underpass carry?

About 38,000 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is SR1728 over Vehicle Underpass?

The structure is 47 ft (14.3 m) long with a longest span of 15 ft (4.5 m).

Who owns SR1728 over Vehicle Underpass?

It is owned by the State Highway Agency.