US Bridges

IH 45 NB Off Ramp over Lamar Street

Good

Dallas County, Texas · 2.0 MI S of IH 30 · Structure no. 180570009214410

Built
2021
4 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,176 ft
9 main spans
Daily traffic
89,694
2019 count
Owner
State
State Highway Agency

About this bridge

IH 45 NB Off Ramp over Lamar Street is a prestressed concrete stringer/multi-beam or girder carrying IH 45 NB Off Ramp over Lamar Street in Dallas County, Texas. It was built in 2021, so it is 4 years old, younger than the Texas average of 44.4 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 89,694 vehicles a day, roughly 12% of them trucks, projected to reach 93,100 by 2035. The structure is 1,176 ft (358.4 m) long and 28 ft wide.

Location

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CarriesIH 45 NB Off Ramp
CrossesLamar Street
Location2.0 MI S of IH 30
RouteInterstate 45
CountyDallas County
StateTexas
Coordinates32.75174, -96.77004
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans9
Design loadHL 93
Structure length1,176 ft (358.4 m)
Longest span162 ft (49.4 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89,694 (2019)
Projected traffic93,100 by 2035
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 IH 45 NB Off Ramp over Lamar Street built?

It was built in 2021, making it 4 years old in 2025.

What condition is IH 45 NB Off Ramp over Lamar Street 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 May 2023.

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

About 89,694 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is IH 45 NB Off Ramp over Lamar Street?

The structure is 1,176 ft (358.4 m) long with a longest span of 162 ft (49.4 m) and a deck 28 ft wide.

Who owns IH 45 NB Off Ramp over Lamar Street?

It is owned by the State Highway Agency.