US Bridges

North Main ST over IH 20

Fair

Dallas County, Texas · 2.46 MI E of Spur 408 · Structure no. 180570237404263

Built
1974
51 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
298 ft
2 main spans
Daily traffic
10,356
2019 count
Owner
State
State Highway Agency

About this bridge

North Main ST over IH 20 is a prestressed concrete stringer/multi-beam or girder carrying North Main ST over IH 20 in Dallas County, Texas. It was built in 1974, so it is 51 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 5 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 10,356 vehicles a day, roughly 3% of them trucks, projected to reach 14,498 by 2040. The structure is 298 ft (90.8 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNorth Main ST
CrossesIH 20
Location2.46 MI E of Spur 408
RouteCity Street 187
CountyDallas County
StateTexas
Coordinates32.66441, -96.906
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length298 ft (90.8 m)
Longest span91 ft (27.7 m)
Deck width58 ft (17.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,356 (2019)
Projected traffic14,498 by 2040
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$33,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was North Main ST over IH 20 built?

It was built in 1974, making it 51 years old in 2025.

What condition is North Main ST over IH 20 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 September 2023.

How much traffic does North Main ST over IH 20 carry?

About 10,356 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is North Main ST over IH 20?

The structure is 298 ft (90.8 m) long with a longest span of 91 ft (27.7 m) and a deck 58 ft wide.

Who owns North Main ST over IH 20?

It is owned by the State Highway Agency.