US Bridges

Lassiter Mill Rd. over I440 US1

Fair

Wake County, North Carolina · 0.42 MI S JCT SR1005 · Structure no. 000000001830269

Built
1993
32 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
243 ft
2 main spans
Daily traffic
13,000
2021 count
Owner
State
State Highway Agency

About this bridge

Lassiter Mill Rd. over I440 US1 is a steel continuous stringer/multi-beam or girder carrying Lassiter Mill Rd. over I440 US1 in Wake 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 13,000 vehicles a day, roughly 7% of them trucks, projected to reach 26,000 by 2040. The structure is 243 ft (74 m) long and 61 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesLassiter Mill Rd.
CrossesI440 US1
Location0.42 MI S JCT SR1005
RouteCity Street 0
CountyWake County
StateNorth Carolina
Coordinates35.83538, -78.64608
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length243 ft (74 m)
Longest span121 ft (36.8 m)
Deck width61 ft (18.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2021)
Projected traffic26,000 by 2040
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lassiter Mill Rd. over I440 US1 built?

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

What condition is Lassiter Mill Rd. over I440 US1 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 June 2024.

How much traffic does Lassiter Mill Rd. over I440 US1 carry?

About 13,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Lassiter Mill Rd. over I440 US1?

The structure is 243 ft (74 m) long with a longest span of 121 ft (36.8 m) and a deck 61 ft wide.

Who owns Lassiter Mill Rd. over I440 US1?

It is owned by the State Highway Agency.