US Bridges

US175/IH45NB Con a over Lamar ST

Fair

Dallas County, Texas · IH 45 at Lamar ST · Structure no. 180570009214408

Built
2020
5 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,582 ft
2 main spans
Daily traffic
36,295
2022 count
Owner
State
State Highway Agency

About this bridge

US175/IH45NB Con a over Lamar ST is a steel continuous stringer/multi-beam or girder carrying US175/IH45NB Con a over Lamar ST in Dallas County, Texas. It was built in 2020, so it is 5 years old, younger 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 36,295 vehicles a day, roughly 6% of them trucks, projected to reach 44,280 by 2042. The structure is 1,582 ft (482.2 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS175/IH45NB Con a
CrossesLamar ST
LocationIH 45 at Lamar ST
RouteInterstate 175
CountyDallas County
StateTexas
Coordinates32.74813, -96.7687
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+13 approach)
Design loadHL 93
Structure length1,582 ft (482.2 m)
Longest span197 ft (60 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic36,295 (2022)
Projected traffic44,280 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 US175/IH45NB Con a over Lamar ST built?

It was built in 2020, making it 5 years old in 2025.

What condition is US175/IH45NB Con a over Lamar ST 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 May 2024.

How much traffic does US175/IH45NB Con a over Lamar ST carry?

About 36,295 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is US175/IH45NB Con a over Lamar ST?

The structure is 1,582 ft (482.2 m) long with a longest span of 197 ft (60 m) and a deck 38 ft wide.

Who owns US175/IH45NB Con a over Lamar ST?

It is owned by the State Highway Agency.