US Bridges

IH 20 over Underwood Branch

Fair

Parker County, Texas · 2.25 MI NE of FM 2552 · Structure no. 021840031407041

Built
1968
57 years old, rebuilt 2018
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
63,451
2020 count
Owner
State
State Highway Agency

About this bridge

IH 20 over Underwood Branch is a concrete culvert carrying IH 20 over Underwood Branch in Parker County, Texas. It was built in 1968 and reconstructed in 2018, so it is 57 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 63,451 vehicles a day, roughly 19% of them trucks, projected to reach 68,430 by 2033. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 20
CrossesUnderwood Branch
Location2.25 MI NE of FM 2552
RouteInterstate 20
CountyParker County
StateTexas
Coordinates32.74882, -97.72641
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63,451 (2020)
Projected traffic68,430 by 2033
Trucks19%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 20 over Underwood Branch built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2018.

What condition is IH 20 over Underwood Branch 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 2024.

How much traffic does IH 20 over Underwood Branch carry?

About 63,451 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is IH 20 over Underwood Branch?

The structure is 31 ft (9.4 m) long with a longest span of 8 ft (2.4 m).

Who owns IH 20 over Underwood Branch?

It is owned by the State Highway Agency.