US Bridges

Hill City DR NB over IH 20

Fair

Dallas County, Texas · 1.85 MI E of Spur 408 · Structure no. 180570237404377

Built
1974
51 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
303 ft
2 main spans
Daily traffic
1,741
2019 count
Owner
State
State Highway Agency

About this bridge

Hill City DR NB over IH 20 is a prestressed concrete stringer/multi-beam or girder carrying Hill City DR NB 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 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 1,741 vehicles a day, roughly 3% of them trucks, projected to reach 1,388 by 2040. The structure is 303 ft (92.4 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHill City DR NB
CrossesIH 20
Location1.85 MI E of Spur 408
RouteCity Street 0
CountyDallas County
StateTexas
Coordinates32.66629, -96.91611
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length303 ft (92.4 m)
Longest span94 ft (28.7 m)
Deck width33 ft (10.2 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,741 (2019)
Projected traffic1,388 by 2040
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$20,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hill City DR NB over IH 20 built?

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

What condition is Hill City DR NB 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 Hill City DR NB over IH 20 carry?

About 1,741 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Hill City DR NB over IH 20?

The structure is 303 ft (92.4 m) long with a longest span of 94 ft (28.7 m) and a deck 33 ft wide.

Who owns Hill City DR NB over IH 20?

It is owned by the State Highway Agency.