US Bridges

IH 45 SB over Illinois ST & Ramp C

Fair

Dallas County, Texas · 0.8 MI N of Loop 12 · Structure no. 180570009214240

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
442 ft
5 main spans
Daily traffic
43,165
2023 count
Owner
State
State Highway Agency

About this bridge

IH 45 SB over Illinois ST & Ramp C is a prestressed concrete stringer/multi-beam or girder carrying IH 45 SB over Illinois ST & Ramp C 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 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 43,165 vehicles a day, roughly 18% of them trucks, projected to reach 45,170 by 2033. The structure is 442 ft (134.7 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIH 45 SB
CrossesIllinois ST & Ramp C
Location0.8 MI N of Loop 12
RouteInterstate 45
CountyDallas County
StateTexas
Coordinates32.71312, -96.75672
Functional classUrban Principal Arterial - Interstate

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than 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
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHS 20
Structure length442 ft (134.7 m)
Longest span69 ft (21 m)
Deck width62 ft (18.9 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,165 (2023)
Projected traffic45,170 by 2033
Trucks18%
Lanes on structure3
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 SB over Illinois ST & Ramp C built?

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

What condition is IH 45 SB over Illinois ST & Ramp C 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 November 2023.

How much traffic does IH 45 SB over Illinois ST & Ramp C carry?

About 43,165 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is IH 45 SB over Illinois ST & Ramp C?

The structure is 442 ft (134.7 m) long with a longest span of 69 ft (21 m) and a deck 62 ft wide.

Who owns IH 45 SB over Illinois ST & Ramp C?

It is owned by the State Highway Agency.