US Bridges

IH 45 NB to IH 30 over Louise ST & Dawson ST

Poor

Dallas County, Texas · At IH 30/IH45 Interchange · Structure no. 180570009214204

Built
1972
53 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
882 ft
6 main spans
Daily traffic
14,240
2013 count
Owner
State
State Highway Agency

About this bridge

IH 45 NB to IH 30 over Louise ST & Dawson ST is a steel continuous stringer/multi-beam or girder carrying IH 45 NB to IH 30 over Louise ST & Dawson ST in Dallas County, Texas. It was built in 1972, so it is 53 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 14,240 vehicles a day, roughly 15% of them trucks, projected to reach 19,940 by 2033. The structure is 882 ft (268.8 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 45 NB to IH 30
CrossesLouise ST & Dawson ST
LocationAt IH 30/IH45 Interchange
RouteInterstate 45
CountyDallas County
StateTexas
Coordinates32.77717, -96.78007
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6 (+6 approach)
Design loadHS 20
Structure length882 ft (268.8 m)
Longest span98 ft (29.9 m)
Deck width40 ft (12.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic14,240 (2013)
Projected traffic19,940 by 2033
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
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 to IH 30 over Louise ST & Dawson ST built?

It was built in 1972, making it 53 years old in 2025.

What condition is IH 45 NB to IH 30 over Louise ST & Dawson ST in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does IH 45 NB to IH 30 over Louise ST & Dawson ST carry?

About 14,240 vehicles per day (2013 count), of which roughly 15% are trucks.

How long is IH 45 NB to IH 30 over Louise ST & Dawson ST?

The structure is 882 ft (268.8 m) long with a longest span of 98 ft (29.9 m) and a deck 40 ft wide.

Who owns IH 45 NB to IH 30 over Louise ST & Dawson ST?

It is owned by the State Highway Agency.