US Bridges

IH 20 over Iron Bridge Creek

Fair

Gregg County, Texas · 0.20 MI W of SH 322 · Structure no. 100930049507297

Built
1967
58 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
29,561
2020 count
Owner
State
State Highway Agency

About this bridge

IH 20 over Iron Bridge Creek is a concrete culvert carrying IH 20 over Iron Bridge Creek in Gregg County, Texas. It was built in 1967, so it is 58 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 29,561 vehicles a day, roughly 26% of them trucks, projected to reach 47,760 by 2033. The structure is 21 ft (6.5 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesIH 20
CrossesIron Bridge Creek
Location0.20 MI W of SH 322
RouteInterstate 20
CountyGregg County
StateTexas
Coordinates32.44479, -94.72411
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,561 (2020)
Projected traffic47,760 by 2033
Trucks26%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 20 over Iron Bridge Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is IH 20 over Iron Bridge Creek 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 2024.

How much traffic does IH 20 over Iron Bridge Creek carry?

About 29,561 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is IH 20 over Iron Bridge Creek?

The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3 m).

Who owns IH 20 over Iron Bridge Creek?

It is owned by the State Highway Agency.