US Bridges

IH 45 NB Off Ramp over IH 45 NB on Ramp

Fair

Dallas County, Texas · 0.55 MI N of Loop 12 · Structure no. 180570009214246

Built
1975
50 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
436 ft
3 main spans
Daily traffic
3,535
2022 count
Owner
State
State Highway Agency

About this bridge

IH 45 NB Off Ramp over IH 45 NB on Ramp is a steel continuous stringer/multi-beam or girder carrying IH 45 NB Off Ramp over IH 45 NB on Ramp in Dallas County, Texas. It was built in 1975, so it is 50 years old, older than the Texas average of 44.4 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 3,535 vehicles a day, roughly 18% of them trucks, projected to reach 9,320 by 2042. The structure is 436 ft (132.9 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 45 NB Off Ramp
CrossesIH 45 NB on Ramp
Location0.55 MI N of Loop 12
CountyDallas County
StateTexas
Coordinates32.70904, -96.75474
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length436 ft (132.9 m)
Longest span164 ft (50 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,535 (2022)
Projected traffic9,320 by 2042
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 45 NB Off Ramp over IH 45 NB on Ramp built?

It was built in 1975, making it 50 years old in 2025.

What condition is IH 45 NB Off Ramp over IH 45 NB on Ramp 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 2024.

How much traffic does IH 45 NB Off Ramp over IH 45 NB on Ramp carry?

About 3,535 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is IH 45 NB Off Ramp over IH 45 NB on Ramp?

The structure is 436 ft (132.9 m) long with a longest span of 164 ft (50 m) and a deck 27 ft wide.

Who owns IH 45 NB Off Ramp over IH 45 NB on Ramp?

It is owned by the State Highway Agency.