IH 20 EB over Bi 20

Good

Callahan County, Texas · 0.75 MI E of US 283 · Structure no. 080300000701101

Built: 1965; 60 years old
Condition: Good; inspected February 2023
Type: Slab; Concrete Continuous
Length: 114 ft; 3 main spans
Daily traffic: 11,830; 2019 count
Owner: State; State Highway Agency

About this bridge

IH 20 EB over Bi 20 is a concrete continuous slab carrying IH 20 EB over Bi 20 in Callahan County, Texas. It was built in 1965, so it is 60 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,830 vehicles a day, roughly 27% of them trucks, projected to reach 12,280 by 2033. The structure is 114 ft (34.7 m) long and 40 ft wide.

Location

Open in Google Maps

CarriesIH 20 EB

CrossesBi 20

Location0.75 MI E of US 283

RouteInterstate 20

CountyCallahan County

StateTexas

Coordinates32.39814, -99.37346

Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.

Last inspectionFebruary 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation7: Better than present minimum criteria

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Approach roadway alignment8: Equal to present desirable criteria

Operating rating56 US tons

Inventory rating33 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length114 ft (34.7 m)

Longest span45 ft (13.7 m)

Deck width40 ft (12.3 m)

Roadway width37 ft (11.4 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,830 (2019)

Projected traffic12,280 by 2033

Trucks27%

Lanes on structure2

Traffic directionOne-way traffic

CarriesHighway

CrossesHighway

Detour if closed—

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 IH 20 EB over Bi 20 built?

It was built in 1965, making it 60 years old in 2025.

What condition is IH 20 EB over Bi 20 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does IH 20 EB over Bi 20 carry?

About 11,830 vehicles per day (2019 count), of which roughly 27% are trucks.

How long is IH 20 EB over Bi 20?

The structure is 114 ft (34.7 m) long with a longest span of 45 ft (13.7 m) and a deck 40 ft wide.

Who owns IH 20 EB over Bi 20?

It is owned by the State Highway Agency.