US Bridges

IH45 SB to IH20 EB over SH 310

Fair

Dallas County, Texas · 0.4 MI E of IH 45 · Structure no. 180570009214302

Built
1973
52 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
201 ft
1 main span
Daily traffic
6,010
2013 count
Owner
State
State Highway Agency

About this bridge

IH45 SB to IH20 EB over SH 310 is a steel continuous stringer/multi-beam or girder carrying IH45 SB to IH20 EB over SH 310 in Dallas County, Texas. It was built in 1973, so it is 52 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 6,010 vehicles a day, roughly 18% of them trucks, projected to reach 8,420 by 2033. The structure is 201 ft (61.3 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesIH45 SB to IH20 EB
CrossesSH 310
Location0.4 MI E of IH 45
RouteInterstate 45
CountyDallas County
StateTexas
Coordinates32.66335, -96.72247
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length201 ft (61.3 m)
Longest span103 ft (31.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,010 (2013)
Projected traffic8,420 by 2033
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 IH45 SB to IH20 EB over SH 310 built?

It was built in 1973, making it 52 years old in 2025.

What condition is IH45 SB to IH20 EB over SH 310 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 IH45 SB to IH20 EB over SH 310 carry?

About 6,010 vehicles per day (2013 count), of which roughly 18% are trucks.

How long is IH45 SB to IH20 EB over SH 310?

The structure is 201 ft (61.3 m) long with a longest span of 103 ft (31.4 m) and a deck 26 ft wide.

Who owns IH45 SB to IH20 EB over SH 310?

It is owned by the State Highway Agency.