US Bridges

Lamar ST over IH 30

Fair

Dallas County, Texas · 1.2 MI W of IH 45 · Structure no. 180570000911189

Built
1965
60 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
276 ft
5 main spans
Daily traffic
10,405
2019 count
Owner
State
State Highway Agency

About this bridge

Lamar ST over IH 30 is a concrete continuous tee beam carrying Lamar ST over IH 30 in Dallas County, Texas. It was built in 1965, so it is 60 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 10,405 vehicles a day, projected to reach 12,200 by 2032. The structure is 276 ft (84.1 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLamar ST
CrossesIH 30
Location1.2 MI W of IH 45
RouteCity Street 0
CountyDallas County
StateTexas
Coordinates32.77134, -96.8008
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length276 ft (84.1 m)
Longest span64 ft (19.5 m)
Deck width79 ft (24.2 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,405 (2019)
Projected traffic12,200 by 2032
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Lamar ST over IH 30 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Lamar ST over IH 30 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 February 2024.

How much traffic does Lamar ST over IH 30 carry?

About 10,405 vehicles per day (2019 count).

How long is Lamar ST over IH 30?

The structure is 276 ft (84.1 m) long with a longest span of 64 ft (19.5 m) and a deck 79 ft wide.

Who owns Lamar ST over IH 30?

It is owned by the State Highway Agency.