US Bridges

IH 45 NB Ramp B over Illinois St.

Good

Dallas County, Texas · 0.8 MI N of Loop 12 · Structure no. 180570009214242

Built
1975
50 years old
Condition
Good
inspected March 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
302 ft
4 main spans
Daily traffic
6,450
2013 count
Owner
State
State Highway Agency

About this bridge

IH 45 NB Ramp B over Illinois St. is a prestressed concrete stringer/multi-beam or girder carrying IH 45 NB Ramp B over Illinois St. 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 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 6,450 vehicles a day, roughly 18% of them trucks, projected to reach 9,030 by 2033. The structure is 302 ft (92.1 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 45 NB Ramp B
CrossesIllinois St.
Location0.8 MI N of Loop 12
RouteInterstate 45
CountyDallas County
StateTexas
Coordinates32.71266, -96.75531
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.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior 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, cast-in-place
Main spans4
Design loadHS 20
Structure length302 ft (92.1 m)
Longest span81 ft (24.7 m)
Deck width47 ft (14.3 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,450 (2013)
Projected traffic9,030 by 2033
Trucks18%
Lanes on structure2
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 Ramp B over Illinois St. built?

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

What condition is IH 45 NB Ramp B over Illinois St. 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 March 2022.

How much traffic does IH 45 NB Ramp B over Illinois St. carry?

About 6,450 vehicles per day (2013 count), of which roughly 18% are trucks.

How long is IH 45 NB Ramp B over Illinois St.?

The structure is 302 ft (92.1 m) long with a longest span of 81 ft (24.7 m) and a deck 47 ft wide.

Who owns IH 45 NB Ramp B over Illinois St.?

It is owned by the State Highway Agency.