US Bridges

SR1400 over I85

Fair

Durham County, North Carolina · 0.4 MI N. of US70 &SR1400 · Structure no. 000000000630043

Built
1997
28 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
247 ft
2 main spans
Daily traffic
6,200
2015 count
Owner
State
State Highway Agency

About this bridge

SR1400 over I85 is a steel continuous stringer/multi-beam or girder carrying SR1400 over I85 in Durham 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 6,200 vehicles a day, roughly 7% of them trucks, projected to reach 12,400 by 2040. The structure is 247 ft (75.2 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR1400
CrossesI85
Location0.4 MI N. of US70 &SR1400
RouteState Highway 1400
CountyDurham County
StateNorth Carolina
Coordinates36.03798, -78.98133
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating52.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length247 ft (75.2 m)
Longest span124 ft (37.7 m)
Deck width33 ft (10 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,200 (2015)
Projected traffic12,400 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 SR1400 over I85 built?

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

What condition is SR1400 over I85 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 March 2023.

How much traffic does SR1400 over I85 carry?

About 6,200 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is SR1400 over I85?

The structure is 247 ft (75.2 m) long with a longest span of 124 ft (37.7 m) and a deck 33 ft wide.

Who owns SR1400 over I85?

It is owned by the State Highway Agency.